Front Locker vs Rear Locker vs Twin locked Differential - Off Road test comparison

[@FroggysGoldProspecting]

this has been the best locker tutorial video I’ve seen, thank you for taking the time to share your years of experience, brilliant!

[@MadMatt4WD]

Cheers

[@terrelltucker4321]

My experience with climbing up very steep and loose areas is the same as your evaluation of a front locker as being more of an advantage over a rear locker. Having front and rear is of course the optimum set up and my choice as well.

[@phantomwalker8251]

buddy,,you need to watch u.s vids,,been doing this for 20 yrs...

[@SeanCleverly]

Very well said, my sentiments exactly.

[@brett9382]

For someone in college with limited funds this video was awesome. Showed me that my old fashioned manual front lockers might not be ideal but should get me through most situations until I can afford to get a decent rear locker and have twin locker.

[@MadMatt4WD]

Mate learn to use what you have.

[@alexbouchard3880]

There's a difference between locking differentials and locking hubs. It sounds like you are talking about locking hubs. if you don't know the difference you can read up on it.

[@toyotadiesel4970]

In this particular case of uphill crawling the front locker might seem to be the way to go if you have to choose. But for general offroad purpose, like the mud holes and ruts, sand and bog, also downhill descent, rear locker pulls ahead. Because you can't steer with front locker for good, you have to use it just for one obstacle then turn it off, it puts so much stress on the driveline and CVs, the front is usually the weak point in most of the cars, IFS especially, you may break your CVs so easily with the front locker on, you need to be careful, experienced and understand what's going on, it's a professional tool basically, that's why most cars would have only rear factory locker and not the front. With the rear locker you may just lock it and move all the way through your offroad track until you get back to the road and it will be a safer a lot more controlled ride overall.

[@MadMatt4WD]

You make some good points.

[@RoderickGI]

This. Steering with the front diff locker on isn't fun, particularly working near obstacles. Also, I can feel the pain the CVs are going through (IFS).

[@phantomwalker8251]

B S. who the hell told you that crap.. the only reason you people turn them off is so you dont sht a cv.. no one in the u.s turns them off,on rocks or anywhere.. buy a decent 4x4.. professor...&,why the hell would you buy a 4x4 with ifs,,??.. there garbage..buddy,,ifs,,cv.s. stay home.....maybe you,,should watch some REAL, 4x4 vids, thousands on u.s ytube.. start with dirt every day,& petersons ultimate adventure. & dirt lifestyle. might learn something usefull...i run 35,s on all my 4x4rs. nothing less..youd make a good salesman for braindead people ..

[@hanksadventures4132]

@@phantomwalker8251 IFS is actually not bad. It's used in baja for a reason. The biggest difference between a live axle and IFS is flex and strength. An IFS system is more prone to lifting a wheel and CV axles are typically weaker. Now, that being said, the advantage of an IFS system is ground clearance and ease of repair on the trail. The military uses IFS and IRS with portal axles to provide maximum ground clearance, with no issues. My 98 f150 with locked front and rear will outperform most Jeeps when it comes to the back roads and woods that I travel through. My IFS system allows me to take different approach angles without worrying about smacking my diff or hanging up on branches. I have skid plates that protect all of my vitals, and if I snap an axle, I can repair it on the trail by removing 12 bolts and 1 nut. This lends itself to trail repairs getting my vehicle back to 100% faster, with less equipment. You snap an axle, your up a creek. You need to remove 12 bolts, 1 nut, drain all your diff fluid, pull a c-clip, and refill your diff before continuing. Thats assuming you don't have locking hubs, which if you do now you have to remove your hub assembly. If I snap an axle, I dont risk contamination in my diff causing excessive wear, you however risk getting sand, dirt, or whatever else in your diff. An IFS system is much easier to repair and is nearly as strong as a live axle.

[@Kana0211]

Drove around with a stuck rear locker on dry pavement. It didn't break the axles

[@DaddyBeanDaddyBean]

That was a very plausible method of making videos alone. I appreciated the consistent, clean audio throughout, regardless of which camera angle we were seeing.

[@MadMatt4WD]

Much appreciated!

[@johnhufnagel]

@@MadMatt4WD 1st video of yours I've ever seen; the multiple stationary camera angles are great, especially for the demonstration/tutorial nature of this video. Like tools in a toolbox, there's no 1 right way to film a video. :D

[@oliververnon8120]

@@johnhufnagelI honestly didn’t even notice there was no one behind the camera until I read this 🤯

[@GGNoble47]

Matt, after careful observation . I think your vehicle would perform much better if the steering wheel was installed on the correct side (Left side) . 8-)

[@MadMatt4WD]

LOL and after considering your comment I laugh in your face. It's already installed on the "right side" 😂😂😂😂

[@nooki1102]

Pretty much most of the world has it on the right side lol

[@MadMatt4WD]

most of the world is metric too.

[@Komeuppance]

Most of the world is wrong... lol

[@Boycott_Wendys]

When right hand drive vehicles come to northern Canada they choose to identify as trailers.

[@abqcrutch]

Been fourwheeling for over 35 years. I learned something new today. Found a new channel too! Thanks Matt!

[@MadMatt4WD]

That is awesome! welcome and enjoy your stay

[@phantomwalker8251]

maybe you need to watch u.s vids,,been doing it a lot longer than aus.. less product advertising. more real content,unlike 4wd 24/7 bs..&.i suppose for the last 35 yrs,you drove toyotas.. that alone,stops your knowledge of 4x4rs..

[@greebo7857]

Clearly, the results are terrain dependent. And this test was conducted while going in a relatively straight line. Front lockers play havoc with steering. So do rears of course, but nowhere near as much. I also think that longer wheelbase cars will react differently to your shorty. If I could only have one I'd probably choose rear, because it is better for where I usually go, but this vid did open my eyes quite a bit. Thanks Matt.

[@benstayskal9804]

I appreciate this demonstration. I’ve always heard back locket first if you can’t afford to do both. But I’ve always thought that front actually makes more sense and seems safer. This makes allot of sense to me. Thanks!

[@MadMatt4WD]

Glad to help

[@abodemoose6181]

It depends. Sand dunes for example, rear dif locker makes much more sense than front dif locker.

[@darthtrump4428]

perhaps that is true in rock crawling but for steep slopes in the snow id say rear locker is better

[@ashleychristensen4290]

That was probably the best video i've seen demonstrating lockers. Really good

[@jwat2396]

I agree with your findings but a commenter made a good point about the stress put on the joints when trying to steer the vehicle with the front lockers engaged. So as was said, with having both lockers on a vehicle it pays to understand your vehicle and whats actually taking place when 4 wheeling. Your videos and tests you show are very helpful and informative. I've got my first 4×4 with lockers and I feel you've given me some very important info to 4 wheel safely and not damage my ridiculously expensive 4×4. Expensive at least for me. Thank you.

[@MadMatt4WD]

Bang on. Go easy on the power and you don’t break stuff

[@OldGriz708]

This goes to show that having both front and rear selectable lockers is important.

[@MadMatt4WD]

Yes and completely selectable.

[@jeffklatt4835]

@@MadMatt4WD Ill take the disagree on this. Nothing better than automatics. Detroit or Grizzly lockers for the win. The big bonus is they are there when you need them not turned on after your stuck. They are also a ton more reliable (no switches, cables, air lines, or power issues)

[@MadMatt4WD]

@@jeffklatt4835 I turn my lockers on before I get stuck. that way when I get stuck I'm proper stuck. :)

[@silenceofthelaw7567]

Yes. Great point. So air or E is the next query.

[@OldGriz708]

@@silenceofthelaw7567 I prefer OX lockers myself.

[@craiglangley8848]

great content, a good training aid for the beginner

[@MadMatt4WD]

Thanks

[@rbrdly]

Interesting. I was absolutely in the REAR camp, but your test (albeit with a shorty) really did demonstrate that pivoting tendency. Well done with that. You could, with an over-enthusiastic right foot do a wheel stand quite easily as well I guess? I've got twin-locked ARB lockers and can't turn the front on by themselves. My options are rear, or both. But in the real world, the lockers aren't the limitation, it's where your friends who don't have them can go. :)

[@MadMatt4WD]

Great points.

[@NerdOfftheRoad]

Best F&R locker test evur! Every time I questioned myself about F&R lockers, search KZbin and came across to this video for multiple times. Always found this useful, more or less.

[@MadMatt4WD]

Wow, thanks!

[@justins380]

Another great video. I love how you are so straight to the point, and don't waste time jabbering on. You did great solo. There are worse videos out there that had camera men. Mrs. Mad Matt edits great too! Cheers From Texas.

[@MadMatt4WD]

Mrs MadMatt is fantastic at what she does. Thanks for the kind words

[@jojinapigkit6094]

@@MadMatt4WD very nice video. so informative sir. but how do we do it in order to have those front and rear lockers? thanks.

[@DEVLB4]

It took me 6yrs to go from front locker only to running twin locked, the other huge advantage of rear locker is on loose surface descent... I didn’t think it would make a huge difference but blew me away the first time I tried it! I’m very happy to run twin air lockers in my GQ and now also reduction gears, such an animal.

[@MadMatt4WD]

Thanks for sharing

[@shaqshuka8392]

I went with a front locker first, for all the reasons you have then demonstrated in the video. NO regrets. Except for the fact I wish you had of released this vid a year ago when I was researching it. Would have saved me hours in time and doubts lol

[@MadMatt4WD]

LOL sorry

[@photosynthesis_by_pete4006]

I am a noob 4WD. This is is one of the best videos explaining diff locker functions to me. You are not mad after all MAD MATT

[@MadMatt4WD]

Lol. Cheers mate. Glad to help

[@kennyhardknocks5183]

Hi Matt while on the tele track rear locker only. The 100 series did exactly what occurred on your video. It pivoted to the left and I had increased rpm far too much. End result lost control as it rear up and pivoted. The only thing that saved it from rolling over was it landed on and 80 series sitting on my left and in 1.2 m ditch, who was watching. I ended up on its bonnet saving my car from a roll over. The guy in the 80 wasn’t impressed. I have a video on it 🙃. I’m going to get a front locker now thank you 😊.

[@MadMatt4WD]

Wow. Hectic. Love to see the video.

[@AustinH7]

I’ll only have a front locker for a while. But I have limited slip in the rear. I think it’ll give me by just fine for a good amount of time. Planning on tackling the rubicon soon

[@MadMatt4WD]

That’s a great start for sure.

[@quetzal1]

Loved that! Excellent demo on varied obstacles. Only big draw back I didn't see you talk about is how you sacrifice your steering when you lock the front diff.

[@MadMatt4WD]

That wasn't really the scope if this video but I think I'm going to do that vid for everyone.

[@jackradzelovage6961]

to be fair in a rig with solid axles worth their salt, the u joints will have no issue with a locker given a reasonable tire size. so if you crank it a good bit youre still gonna be scrubbing a lot but you can still turn reasonably well especially if the surface is any sort of slick. :)

[@oliverb.8008]

A few years ago i spoke about this Theme with a good friend of mine - he is driving Off_road Trials for a long time up to now - and his Opinion is : the Front Locker is more important than the rear ! So your result is also right . Thank you for your Video !

[@fecklar1905]

From USA here...super video. If I was to go with lockers...I would go with front first then rear. I have an older f150 and put in torsen geared limited slips in both fromt and rear. They have worked fantastically over stock which was a clutch style limited slip rear and open in the front.

[@MadMatt4WD]

Thanks for sharing

[@alloutkx450]

This was an extremely well made, edited video that got straight to the point and not like most videos where they talk for 10 minutes before showing footage. YOU ROCK!

[@MadMatt4WD]

Thank you sir

[@alloutkx450]

@@MadMatt4WD much deserved 👏

[@craigmckinnon8792]

Great video showing the difference. Can't beat twin locked but front definitely makes the biggest difference and has the most control when crawling. After all you have to get the front up first

[@MadMatt4WD]

Totally agree

[@CoorsLightyear]

Great demonstration! I also have always done front locker first. In most my rigs I run a locker up front and an LSD in the rear.

[@barneybetelgeuse6273]

Agree with your thoughts i always believed limited slip on the back and locker on the front better off pulling the weight than pushing 😃👍

[@MadMatt4WD]

Thanks

[@tylermorris9196]

exactly what i have and I've never needed my winch!

[@daveharness70]

I totally agree. I had a LS in the rear and locker in the front and it was really hard to stop. Then I spooled the rear, and it was never the same...not as much control going up rocky ledges.

[@jake-mv5oi]

Agree completely with your conclusion. I've seen many jeeps trying to climb an obstacle with only a rear locker and when they have to climb a sharp ledge with one front tire first, it causes the whole front end to bounce as the tire still on the ground loses and regains traction, shock loading the drive train. Meanwhile in my wife's grand Cherokee with a front locker/open rear, the tire on the obstacle gets 100% traction and pulls that side up until the other side can get on the obstacle. Usually once I get the front end up, I can gain enough momentum to drag the rear over.

[@MadMatt4WD]

Very well said. I find the same thing.

[@garyarbogast6703]

Aside from axle lockers having an inexplicable tendency to attract flies, their virtues are well demonstrated here. Having E lockers that can be controlled by the driver seems to have an added benefit over limited slip style that lock whenever wheel slip is detected. It’s the golden combination having adequate money, technical savvy and good equipment. Nice video by the way in spite of being a solo effort.

[@MadMatt4WD]

Thanks Gary. I love being in complete control of my lockers.

[@Nathan-pw1rh]

Those are both e lock style lockers?

[@MadMatt4WD]

yes

[@Nathan-pw1rh]

@@MadMatt4WD have one more for you...do the front elocker unlock while engaged if you turn your wheel?

[@zman92630]

I used to be a 'rear locker first' guy but I'm now thinking differently. I did my rear locker first, but overall, I'm very happy I did both. My rig is unstoppable, and I can crawl without putting excessive stress on my components. I agree with the others.... this is THE best lockers demonstration out there. Many thanks!

[@MadMatt4WD]

Next time your out just use the front and see who you go. It’ll change your mind for sure.

[@gregz4249]

On my Cummins powered farm truck I have limited slip in rear and front lunchbox locker solid axle vacuum delete and free spin hubs Works good, would like to add a dyna trac to rear or electric locker Also installed red head and synergy Ty rods ,drives great on or off road

[@customcraftnadventure]

Really good demo. I went for a front LOKKA due to the affordability. The best addition so far. Took me thru most obstacles. But an obstacle like the last hill you did clearly demonstrated the need of twin lock. I would still go for front LOKKA first then rear if I had to do again.

[@MadMatt4WD]

Thanks. Glad to help.

[@steiny3353]

customcraftnadventure ..I see your post is 2 years ago, so I'm doubtful of getting a reply, however, I have a 2020 LTZ Colorado twin cab, auto. I'm toying with the idea of a locker (one to start with) my mate who has been 4x4 ing for many years reckons go for the front first as he reckons my LSD (in the newer cars) works particularly well. With the traction control, he is surprised at the places I can go. It's the age old story, a man doesn't know where to stop. 🤣

[@KJsProjects]

This is a great demonstration. I love the capability of having lockers front and rear on my Wrangler JK Rubicon. I installed a lunchbox locker in my 97 Grand Cherokee ZJ and have a Volvo locker for the front waiting to go in.

[@MadMatt4WD]

Very cool!

[@99unclebob]

When you say Volvo locker, what are you sourcing it from a 200/700 or 900 series car, the reason i am asking is I have an 1989 Volvo 240 that I drive daily about 90 miles daily to work and where i live in Canada we get a hell of allot of snow and I've never not made it into work unless the roads are closed and run the best snow tires i can buy, and have researched diff lockers from certain jeep models of XJ's used, the dam auto wreckers want new dollars for them and have no warranty so the hell with them, so i quit looking and forgot about it until i saw Matt's video here and a dam good one as usual , so i am thinking of going new diff locker and my choice is not large , the car has a Dana 30 with 3.73 or 4.10 gears, so far i know i can go electric , air or an AUX locker full manual cable actuated and not too hard to install, just would like to know anyones recommendations about this, i had previous 240 with an LSD with a manual 5 speed and in snow in 2nd gear with the LSD it would push snow bumper deep no problem and even pretty good at smashing through drifts just not too often until it plugged my radiator once and started to over heat and ended up ok except cost me a front grille and headlight bezel and after that winter the LSD had to be rebuilt and was over a $ 1200 and could have had a new electric locker at the time for about $400 more , so if someone could let me know as to what their thoughts are on these options it would be greatly appreciated 👍

[@KJsProjects]

@@99unclebob I think I got mine out of a 940. Don't remember for sure, I got it about 6 months ago. The best thing I like about the locker is that it unlocks at 25mph. So it will never be an issue on the road. I personally would look at an OX locker. You can then choose to use cable, air or electric with the same locker. Also all of the locker actuators are outside the housing, so you will never worry about air seals in the housing like an ARB. They also make a tool you can screw in and manually lock in or out the locker. I doubt you will need this on a street application, but it can be a life saver on the trail if damage the cable/air line. My next recommendation would be an Eaton e locker. Thats basically what I have in my Rubicon and they work great!

[@MadMatt4WD]

What should you buy first? I do an Off Road test - 1st OPEN DIFFS, 2nd FRONT LOCKER ONLY, 3rd REAR LOCKER ONLY and 4th TWIN LOCKED on each obstacle! Here are my results!

[@Patrolinaus]

I believe people should buy front locker first so then they have a locker and an LSD, not just one locked diff. Especially for IFS vehicles where the front end has barely any flex

[@jake-mv5oi]

Havent watched video yet but I prefer front first. Allows you to get the front end up an obstacle and then I can gas the rear through it.

[@MadMatt4WD]

:) Have you watched it yet? :)

[@jake-mv5oi]

@@MadMatt4WD yes. Concur with everything you said.

[@fabulousoffroaddesigns5080]

I built my F-150 like Ford builds its top Raptor's. I go front Torsen® diff and rear E-locker. This way my front axle works all the time from 1 to 100 mph and beyond. That front Torsen® is so good I almost never use my rear locker. Because of this I am "Front Locker" on all the time in 4WD.

[@daveharness70]

Great video. Totally agree. However, when you did your discussion behind and below your rig (3:30) on the steep slope I got the willies. I'm not super safety oriented, but why tempt fate in those cases. Be safe!

[@MadMatt4WD]

I’m also very aware of the vehicle situation due to the reduction gears and working handbrake both of which were holding the vehicle on that situation in their own right. Also it would take a period of time to accelerate so I’d be able to step out of the way should it roll away

[@davidnorthrup3674]

I agree that the front locker gives a lot more stability then the rear. I would consider it better to possibly not get over a obstacle, then possibly role your vehicle. I do have a question for you though. I do not have a dedicated off road 4x4. I have a 1977 Chevy k10 long bed with a flat bed. It has limited slip both front and rear. I mostly use the 4 wheel drive to avoid getting stuck in the snow and pull out vehicles that do. As a daily driver is there and big benefit to putting lockers in it. As of yet I have never been stuck even in snow that went above my bumper. Thanks for the video! very interesting.

[@MadMatt4WD]

I wouldn’t fit lockers to that for your use. 😉

[@davidnorthrup3674]

Thank you!

[@aleksandrgulyy5744]

Subscribed. No extra talking, straight information

[@MadMatt4WD]

Cheers

[@shannonjulian3847]

I must say i am very impressed at how many comments you reply to

[@MadMatt4WD]

People matter and I want to help them. What’s the point of content if I don’t have the conversation ay? It’s a lot of work though. Lol. Thanks for noticing

[@shovington67]

@@MadMatt4WD , perhaps you can put together a list of equipment and price needed to accomplish this video paradise that your viewers talk about?

[@erikb8877]

I won’t deny that a front locker is more effective, if it’s a choice of one or the other but there is usually a reason most choose a rear locker(especially an automatic type) over a front first. It’s because the rear drive is the default mode of locomotion, is generally stronger, has fewer moving parts and is less prone to a failure. A front locker puts more stress on the driveline weak links-transfer case to front hubs. If something in the front fails, the rear drive is usually still operational and having rear drive only combined with a locker is almost as effective as a standard 4wd with open diffs.

[@Clynikal]

Front locker with stock rear limo. Awesome video too! Simple and no BS.

[@MadMatt4WD]

Thanks

[@bquade70]

Great video, excellent timing for me!! Lake Havasu, AZ. USA Great to see a new vid...

[@MadMatt4WD]

Awesome! Thank you!

[@anotsostealth]

I'll I've ever wanted was a spot like this to drive around. Looks like tons of fun! And very informative too!!

[@MadMatt4WD]

Thanms

[@andreashecht3045]

I installed a rear locker first on my Pajero, what a mistake! Installed a front locker second, don't use the rear anymore. If i had my time again, I'd leave the LSD in the rear and front locker only.

[@MadMatt4WD]

Nice

[@thomasdestefani4799]

You have the pajero sport 3.0 v6? Witch locker you installed?

[@petarcetinich9246]

I just got a 2001 Nm Pajero. It only has front Locked, would like to know more as to why you would prefer the lsd

[@scoutdogfsr]

Greetings from Colorado USA. Love to see how passionate our Aussie brothers and sisters are about wheeling. Wish we could swap place every now and then. I would love to get some of your red mud on my chevy k5! Keep up the fine vid work.

[@MadMatt4WD]

Cheers mate. I’ve wheeled sand hollow which is as close to you as I’ve ever gotten.

[@PNWJEEPER01]

Based on my experience learning to use lockers, I agree with you and feel that the less experienced driver is far less likely to get themselves into trouble with a Front locker than with a Rear locker. As far as which is more useful, I think it really depends on the particulars of the driving surface and whether you're stuck (along with what you're stuck in) or having rolling traction issues. For rolling traction issues like a storm where there are several inches of packed snow and ice, I prefer to roll (slow as I can, fast as I need to) with the Front locker only engaged. For trail obstacles, every situation is unique and I season each to taste. I also think it's a lot easier than one might think to create a torque steer issue, as you mentioned, with a Rear locker (especially on an incline) when the front tires are not solidly grounded that may roll you over or get you stuck worse by breaking something back there or pushing the front end in an unexpected direction. My personal approach is to nearly always try the Front locker only first, unless it's obvious that the problem is out back (no pun intended) and if I had to choose between having a locker in the front or the rear, I'd definitely choose the front. I can think of very few situations where I reach for the Rear locker first. Inexperienced off-roaders are probably better off with Limited Slip back there, imho. My brother has a Toyota which came from the factory with a Rear electric locker only and I've always wondered what Toyota's thinking was behind that- ideal for climbing the boat ramp, I guess?

[@MadMatt4WD]

great comment and thanks for picking up the purpose of the vid was to answer the beginners question of which single locker should i fit first.

[@vadimnesen8060]

My Toyota with center and rear locker is very capable. And reliable..This video is made by using a toyota that probably came with a rear locker only option

[@PNWJEEPER01]

@@vadimnesen8060 thanks for your reply and input; based on your mention of "center" lock, which I take to mean Transfer Case Lock, it sounds like your point of reference is AWD, rather than 4WD.

[@rguil15]

Best locker demonstration on the internet. Great job.

[@MadMatt4WD]

Thanks Ryan

[@sweet65mustang]

Air locker front, lockrite rear.

[@christopherlatham4254]

I have a Ford E-350 based Sportsmobile with 4WD conversion and it has an ARB locker in front and limited slip in the rear. I am the second owner and the original owner had it setup this way. I have found that this combination works very well. If I had been the original owner I'd probably have gone with twin lockers but have no plans to change what I currently have.

[@AllFourX4Spares]

Well done Mad Matt, that was a great video

[@MadMatt4WD]

Cheers mate. 🤟

[@w0bblyd0inkb0ink]

This channel is so underrated, with the high quality technical information here, this channel should have a million subscribers at minimum!

[@MadMatt4WD]

Lol. Tell KZbin please.

[@Malc664]

That was mad Matt. All the pro's saying rear locker's better and the front was superior.

[@MadMatt4WD]

Cheers mate.

[@rr6013]

Experienced 4X guys learn front either locked or simply chained-up can pull you through where rear cannot. Especially mud, deep ruts and uneven terrain the front drive unit is the go-to set up. Lockers are dangerous needing experience with how they can put you into trouble fast. BUT they are absolute bonkers in rock to click in&out of the toughs. Nice demo!

[@MadMatt4WD]

Cheers

[@68mustangman]

The only thing I would say is steering becomes much more difficult with the front locked if you have to turn on the trail. Not to mention “weaker” components having u-joints and hubs. I would think the potential for damage could be higher using front only.

[@bernelnery2191]

Awesome way to demonstrate Front vs Rear Lockers (Uphill mode). I started with Rear locker. but hey, a locker is better than none. Reasons why I chose rear was because I upgraded my Dana 35 to Ford 8.8 and it was already being worked on - 1994 Jeep ZJ 5.2 V8. Also reading some comments below, there are indeed tons of variables, not just going uphill test.

[@MadMatt4WD]

Totally agree.

[@vevohoeyo]

Rear locker is definitely best in 95% of situations. Especially with utes as they are more stable than these terrible old top heavy Cruisers. This is a good demonstration but this outcome can change drastically from vehicle to vehicle.

[@TheJanope13]

IFS utes are front wheel lift magnets and easily destroy a cv when that wheel in the air comes over and touches the floor

[@jcarry5214]

I appreciate this. This makes a ton of sense and validates my suspicions. I've been a longtime front drive owner (some LSD, some not) an AWD owner, and now many years in RWD (with some LSD) the selectable front makes so much more sense as the option for people with one axle worth of cash to spend. This is compounded by the fact that many of us 4x4 owners are driving independent front axles which are known to be much less vulnerable to splintering when a locker of some type is installed.

[@MadMatt4WD]

Great comment

[@jcarry5214]

@@MadMatt4WD Great video.

[@akelkhunter]

Limited slip in rear and locker in front for a reasonable on and off road rig?

[@MadMatt4WD]

So long as the LSd works. In toyotas they're notoriously unreliable.

[@jasonallen6836]

See my comment above. I think it depends on how well it works, and how much street time it sees.

[@nicholaskaye61]

@@MadMatt4WD Hey Matt could you elaborate on unreliable? I know they have a supposed short working life, but what are your concerns with the 100 series LSD? Also very interesting to hear you say

[@ayeshanbandara8003]

In a GU patrol rear LSD and front locker will take you everywhere. and the rear LSD do help with road manners too. The rear LSD on a patrol is tight as!

[@sultanheart]

I have nissan pathfinder R50 with front lokka locker and rear repacked LSD.. its unstoppable

[@nutz13_]

love how in depth this was! really great vid for newbies who may not understand how lockers are valuable and what they do. for visual learners this is honestly a great video!!!!

[@MadMatt4WD]

Glad it was helpful!

[@stoichiometry147]

This came into my head today. Front locker it is

[@MadMatt4WD]

Nice

[@DefineReality2023]

Great knowledge. Never knew how these diffs worked. Just have the 4H and 4L in my ride. I’d love to have twin locks someday but I’d wanna learn more about it first. Seems like the best way to go.

[@MadMatt4WD]

The best way to go is learn to wheel without lockers then step into them. That makes the best wheelers.

[@abdulsalamjepara]

the next vidio about suzuki jimny locker

[@MadMatt4WD]

What’s special about them? They do the same job?

[@abdulsalamjepara]

@@MadMatt4WD Suzuki Jimny is a small and light car, will the result be the same if you use a locker?

[@MadMatt4WD]

Yes the effects will be the same in principle. My vehicle is comparatively small and light compared to my full size 4wd. Both vehicles car have the same effect

[@abdulsalamjepara]

@@MadMatt4WD thank you for sharing your experience about offroad features & tricks

[@MadMatt4WD]

My pleasure

[@Kendalwong]

That first explanation with the rear diff lock. Wow. I’m impressed

[@MadMatt4WD]

Cheers

[@mackies9151]

Front locker and LSD in the rear(if it is already in from the factory -ie- jeep willys package)

[@MadMatt4WD]

It’s certainly a very good solution

[@pokeyrebel3730]

I watch a lot of Matt's off-road recovery and his setup is the Detroit front and e-lock rear which is how I plan to go because you have illustrated exactly how his system works. Excellent video.

[@MadMatt4WD]

I wouldn’t like a Detroit up front. You need to control it yourself.

[@ChookChasersMX]

IFS vehicle probably the rear first as more chance of breaking the front CV’s and also the front needs to be turned off more often when turning

[@DaveXL495]

I'd rather have to get out and winch a couple times on a remote track than flick the front locker on and explode a CV that's for sure.

[@MadMatt4WD]

Hey guys. In my experience the CVs are not that weak assuming your running factory quality or better. The reason they do break is when people are driving too hard. A front locker actually strengthens the front diff due to it providing greater strength to the crown wheel.

[@petrojectnz3615]

You’ll break a cv if you’re giving it a hard time, but if you have lockers in, you don’t have to cane the thing. Never ever have I broken a front CV.

[@DaveXL495]

@Frugal Family Living A reasonably well tuned traction control like Toyota ATRAC would stop that anyway. And if you were needing that much throttle with that much wheel lift, just winch. Older vehicles definitely would benefit a lot from being twin locked.

[@samrhino9224]

Great video, people will never stop arguing whether front vs rear is better, but it's great to see it actually tested for once! Sure beats asking for advice online, all you'll get's either, "buy front and rear top dollar nothing less". Or ""well my stock 91' ford climbed mount everest with an open diff" nonsense.

[@MadMatt4WD]

Lol. It’s true.

[@chazzgitzel2802]

Haha everyone thought i was mad to only have the front lock before the back!!

[@MadMatt4WD]

😁

[@neutronstorm]

Perhaps you are if you agree with another guy called Mad Matt!

[@tubqhe]

@@neutronstorm yep. Agree with mad max and toyota wholeheartedly!

[@neutronstorm]

@@tubqhe I don't understand what you're saying 100% but here is my response. I don't think people get centre diff lock confused with a front axle locker. I haven't ever hear that one but I guess it's possible. In the 200 series, the centre diff lock is a torzen type limited slip diff. This coupled with the brake traction control mean that you can drive most stuff without locking it. I generally punch mine in for extreme up hill, down hill or any situation where loss of traction is expected.

[@phantomwalker8251]

the front pulls you thru,,been known in u.s for 50 yrs.. dumb ausies..watch more u.s vids, you learn more..

[@thatairplaneguy]

I have been on your side of a front locker first opinion for the same reason. I’m glad a professional agrees with that because I’ve been shot down every time I’ve brought it up. Of course both and selectable are ideal BUT we all have to start somewhere and most can’t afford front and rear selects.

[@MadMatt4WD]

Nice

[@williamolliges2622]

Damnit! Just cost me five grand when I order my new Bronco.

[@MadMatt4WD]

Oh man I can only help so much

[@phantomwalker8251]

why you buy a new bronco,?,for the mall.?..should of got the dodge power wagon.. buy & drive. job done..

[@717UT]

That is a fantastic bit of driving and comparison. Thank you for your work on this.

[@MadMatt4WD]

Thanks

[@hellbillyBob]

Best visual presentation of lockers. And a damn good opinion explanation

[@MadMatt4WD]

Thank you kindly

[@elektro3000]

Excellent demonstration. I think the best conclusion is that the advantages of either front or rear locker are very subtle compared to the clear advantages of twin lockers.

[@MadMatt4WD]

Great comment

[@herbyking2623]

Agree with your findings... front locker is an essential part of serious off roading...

[@torizaemon]

Great vid thanks. You covered your examples quickly and with the right amount of detail. Others can learn from your technique (both 4wd and video production).

[@MadMatt4WD]

Thanks

[@cyclemoto8744]

I've been wanting to invest in my first locker for 5 years ! Early on I was advised by 1 person that front first is best but all others have said rear is best. Having contemplated all the feedback in addition to the actual physics I came to the conclusion that front was the most logical. However, I have been paralysed in making a decision due to the overwhelming feedback pointing to a rear locker. Matt, your demonstration has proved to me that I should never have doubted myself. Many thanks for your content (FYI, I'm now subscribed) which was extremely well presented, and as others have stated, you do not waste time with pointless jibber-jabber. Cheers

[@MadMatt4WD]

Thanks so much for the comment and chuffed to have helped you.

[@seanmcpherson7962]

Physics is tricky. If you are going up a slope the steeper you climb the less down force on front axles and more on rear. Of course if both axles turn same speed the push over effect happens. This is why if using physics what a crawler should want is a front axle that rotates faster(slightly ) than the rear.

[@grantinsley]

That was an excellent demonstration with very interesting results.

[@MadMatt4WD]

Yes.

[@bearingwitnesslive]

I am building an M35A2 Deuce and I have been contemplating this very question. After watching your vid, I have made a choice. Front locker first, especially since I am work with a 6x6. Thanks so much, from a new sub!!!

[@MadMatt4WD]

Thanks

[@rr6013]

You want to buy and carry a 2nd short axel shaft for that locked front carrier setup!

[@MadMatt4WD]

No, their not known to fail

[@silenceofthelaw7567]

I also used to believe rear locker first was better. I've always wondered if pulling with the front would be better. This video has changed my mind. Thank you. Great content for us nerds.

[@MadMatt4WD]

Glad to help

[@DanielB-py1yi]

I loved the clarification of "If the LSD works". As a former Toyota driver, I can vouch for ya there. May as well use butter. I was really surprised by the extra stability the front locker gave. Great video Matt.

[@MadMatt4WD]

Thanks

[@jamesmuddz4969]

So far best locker comparison video I have seen so far, been trying to decide which locker first for my Cruiser and this was great. Cheers Matt

[@MadMatt4WD]

Glad to help.

[@groberts1980]

I had twin lockers put on my Jeep JK a couple of years ago and I'm still learning when to use front, when to use rear, and when to use both. I have yet to come across a good video or explanation that helped me learn properly. I lean towards turning on rear locker sometimes, and both lockers for particularly difficult obstacles.

[@MadMatt4WD]

I’ll often go both. But playing with them as you do is the key and keep in mind every obstacle will be different.

[@modesteanton5632]

Superbly presented video in consideration of the fact that you we filming solo. Well edited. Very solid information provided. Keep up the good work

[@MadMatt4WD]

Thank you

[@hayden8693]

Front diff lock and rear diff locks are both needed for unique situations. In this case the front diff worked amazing. Great video

[@MadMatt4WD]

Absolutely.

[@hayden8693]

@@MadMatt4WD should you always try an obstacle such as a steep hill without rear lockers maybe just 4low first? Then after failure use lockers

[@MadMatt4WD]

@@hayden8693 yes and No. Every situation will be different and can require a different way of driving it. At the end of the day it comes down to what your trying to do with your 4wd. If it's just get to a good camp then locker on but if it's trying to learn what you can and can't drive then play around. I often know what I'll have trouble with so can flick lockers on accordingly.

[@hayden8693]

@@MadMatt4WD awesome thanks for the reply

[@judgetk8327]

I have driven on every terrain this planet has to offer. One important thing if your exploring by yourself, is use only the rear locker and when it gets soft muddy or iffy, stop put the front locker on to and back out of there. Too many times I have seen people way back in the middle of nowhere and full 4x4 and get stuck. Then you are you know what without a paddle. So when alone one locker. When you get stuck use another locker to get the hell out of there and go somewhere else. Love the way you did your video and I agree with you all the way. Drive safe.

[@MadMatt4WD]

You make an excellent point for those who are twin locked. When I'm remote a certainly err well on the safe side too. Just to be clear this video was focusing on the situation where a person can only fit one locker.

[@jackradzelovage6961]

i went on an adventure with my buddy at rausch creek in 2019. we had an 88 isuzu trooper that had been either spooled or welded by the previous owner so it was a 100% lock all the time. the trip only involved the green trails but there were still plenty of gnarly spots for a stock height rig to tackle. it was all tripoding on ruts and washouts, fender deep water and mud holes, and small bits of rock crawling. we made it all the way around the perimeter of the entire park and then halfway back one side (about 6 miles total +/-) before a steep bit of hill made us realize we forgot to lock the hubs. wed accidentally been in 2wd for the entire two day excursion, and straight up didnt notice because the locked rear was performing so well. if that doesnt sell you on getting a locker in either end, idk what will. :)

[@MadMatt4WD]

Lol. What an adventure

[@x4x4offroad87]

Well I have the same logic I used to think that a rear locker was the best thing to do because it helps out greatly but watching this video kind of changed my mind I got a little 88 Suzuki samurai that I'm fixing to put a mini spool in the rear and I might go with an ARB front air locker on it now after watching this thanks man awesome video really enlightening keep it up

[@MadMatt4WD]

Cheers mate.

[@katreniaclark]

I would have to agree with you Matt, Front first if you do not have the money or whatever is holding you back from getting both done at the same time. Great show of it.

[@modacare4546]

Excellent job. Camera work was awesome and the locker info/rpm/driving technique was perfect. Great demonstration.

[@cliffcross6487]

This was very educational. It has changed my mind about which axel to lock up. Thank you !

[@MadMatt4WD]

Pleasure.

[@dannyeugenewaits9486]

This was such a wonderful demonstration! I have been chewing on my tongue this exact question....I was unsure what was best to start with?? You Mad Matt answered my question and concern! To the front I began!

[@MadMatt4WD]

This makes me very happy.

[@mopedinthemalverns6661]

Great video! You scared me at 3.25 when you stood behind the car though! Subscribed mainly because you didn't put any music on the video - as a result it was really watchable - excellent presenting skills.

[@MadMatt4WD]

Cheers. There was minimal danger standing there. The handbrake works and it’s in low 1st which is immovable with the reduction gears. What’s more if it did start to move I can just step out of the way.

[@ls66]

Very informative i would have thought rear locker, but now I see the importance of a front locker. So I'm going broke on both! Thanks for a great video.

[@MadMatt4WD]

Twin is much more fun. Live broke with toys. That's how i roll.

[@jbp6759]

Great video. I've read lots of opinions on this but this is the first video I've seen making the case one way or the other.

[@MadMatt4WD]

Thanks

[@leonardogarcia2506]

5 stars or 5 thumbs up! Answered my question absolutely perfect!

[@JuliusHT]

I really enjoyed this video. I think you did a great job demonstrating your points! One advantage I found with a rear locker is when you're going downhill with engine braking the rear wheels will act as a drag stabilizer, keeping your vehicle pointing straight down.

[@MadMatt4WD]

Thank you I regularly use the rear differential lock when going down steep hills

[@BorisEkner]

A very good demonstration. Thanks. I have ordered a rear locker for my 2022 Jimny from Kaiser in Brazil. They make automatic lockers for trucks and tractors. I expect delivery in about a month. In Dec this year (2022) I will order a front locker as well. Because I want to prepare my little vehicle for the worst conditions imaginable.

[@MadMatt4WD]

It’ll be unstoppable twin locked

[@BorisEkner]

@@MadMatt4WD Yup. That’s the idea. 😁

[@BorisEkner]

@@MadMatt4WD At this moment i have twin lockers from Kaiser. No, they are not better than the ARB’s but they are way better value for money. Yes, I have had to learn to drive the car again. The learning process has taken some time but I am very happy with my choice of the Kaiser lockers. Meaning, I’ve seen much more expensive 4x4 vehicles struggle at obstacles where my twin locked Jimny pass with ease thanks to the lockers from @Kaiser.

[@MadMatt4WD]

@@BorisEkner There is no doubt having al wheels driving works wonders for any 4wd. And yes they take some learning to use.

[@BorisEkner]

@@MadMatt4WD kzbin.info/www/bejne/r3STcn5ni5J8ntksi=wn7umlda2RZp6rgw At 11:36 it’s my turn. As I’m driving a brand new vehicle I’m way beyond my comfort zone. The current is strong on the left side of the car and I’m not experienced enough to understand nor know what I will experience. In hindsight I drove too fast across the river and I hit a few rock harder than healthy but nothing broke. Next time, same conditions, I will drive way slower and in a more controlled manner. But twin locked gave me the little extra confidence I would succeed, despite every part of my body screaming ‘Turn around!’.

[@eldenswordable]

Thanks!

[@MadMatt4WD]

Thanks for the support.

[@SweetComaBlack]

I went with a Rear Locker and a Front axle Limited Slip on my Jeep Wrangler JK and I love the performance of it. I’ve heard it’s tough turning when you have the front locked so I figured why not just not have to worry about having to unlock the front when turning at the top of an obstacle and just have it do the work automatically.

[@MadMatt4WD]

nice. people make a big deal of the heavy turning thing but It's not actually much of an issue.

[@patriotmission5631]

Just getting ready to get my first locker. Had a rear on my wish list . . . you changed my mind.

[@MadMatt4WD]

Get both of possible

[@tpv59]

BRILLIANT. EXCELLENT Simple, Easy, NO Krapp demo. 10/10. THANK You. MUCH APPRECIATED.

[@MadMatt4WD]

My pleasure and glad to help

[@tpv59]

@@MadMatt4WD YOU did !!!

[@hphillips7425]

Good video. I agree front locker and even better get both at the same time

[@paulineroyadair3505]

Good work doing all of it on your own loved it . We run a rear limited slip front locker . G.M.C 1973 thanks for the demonstration . Roy

[@MadMatt4WD]

Thank you Roy