When Should You Re-gear Your Jeep JL or Gladiator?

Matt discusses gearing and when you should re-gear on your Jeep JL or Gladiator JT!
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[@nickm764]

I just put revolution gear and axle 4.88 on my Jeep JL from the stock 3.45 on 35's and honestly it was not easy and took me longer than I care to admit but my god it was totally worth it! I don't want to do another set of axles anytime soon but I'm so glad I did it, she shifts like factory, use 7th AND 8th gear on the highway and overall shifts better and gained back all the low end I lost with the taller tires. LOVE IT!

[@Wrangzilla]

Well. After spending almost 60k on a 2020 JLUR, lift, 37’s and other accessories , I’m too poor to regear.

[@Getbigwithkev]

Lmao ! I second this comment. Same boat

[@hectormartinez129]

Your putting more stress on your transmission

[@Wrangzilla]

HECTOR MARTINEZ not enough that I’m worried about it. The auto 8 can handle it...

[@mammeltoes83]

You can put it off sure, but you'll be paying more in maintenance later.

[@essedbl777]

Just Empty Every Pocket... JEEP for short

[@estebanlozano2971]

I was thinking about that kind of information thank you Sir Matt.

[@EricTheOld]

4.88s on 37s. Reprogrammed the computer so the trans won't go into limp mode. Doing great!

[@stuartgthompson]

Great video and very clear. Thank you for making this so easy to understand for us newbie Jeep Gladiator owners

[@bradschoeck1526]

Thank you-this is what I was looking for.

[@christophermartinez5314]

Great videos

[@caferacercalifornia]

Thanks for the great info.

[@BennyTygohome]

In Arizona my tj was on 33" tires with 5.13 for az rocks. I could start in 2nd gear in daily driving I eventually went to 35" then to 38". I chipped the teeth on the rear ring one time but Yukon warrantied it. Still paid for labor to install though, as would be expected. It was great for it's usage although i liked it better on 35"than the big 38" it manuevered lousy with stock steering with the much larger tires on the trails. So then i went to upgraded ram assist with PSC power steering pump, then lengthened wheelbase by cutting the tub and moving rear axle back with long links. It's s downward slope. For my jl Rubicon i plan to keep closer to 4.88 at most and 35" (2 dr).

[@m.e.9974]

Very informative.tnxs.

[@CJBroncoF150]

Glad it was helpful!

[@josebadillo4135]

Do these re-gears also apply to the 2.0lt engine? Running 35’s on stock gears and want go re-gear to 4.56.

[@allantilley3716]

JTR with the stock 4.10 and have 37’s and I think it’s fine for what I use it for (over landing, light off-roading - NO rock crawling). I couldn’t justify the cost of changing them for such little improvement (I have driven JTs with 4.88s). Most of my driving is on pavement since it’s my DD and mostly flat around here.

[@no_lft_shft]

It's been two years since you commented this. Have you had any issues or have you re-geared since?

[@kace9214]

i have a max tow jt with 4.10 ratio and 35s, i reach 8th gear on the high way and the difference in acceleration was very minimal. just my daily driver and the occational drive onto the beach

[@davidbailey5006]

I’m thinking of ordering a new Gladiator Willys with the Extreme Recon and the diesel with the auto. What are your thoughts? 35 in tires would prolly be my max.

[@SuperBumblebee78]

Gladiator rubicon, Nitto 38”, more hwy, trails 2-3 times per year, tow occasionally 5x per year. What should I regear too?

[@davidrockville7889]

Planning on ordering a 24 Rubicon with 35s, 3.6L, will put on roof top tent and maybe tow a couple of times a year. Should I go with the 4.56 or get 4.88 option from factory?

[@billybullock5744]

I have a 392 coming in next week. Should I regear if I change to 35’s and what gear ratio and do I need to regear if I went to 37’s. All of the forums say you don’t need to regear but I want to hear from an expert like yourself. Love your channel! Thanks

[@offroading00]

hey, it’s passed 1 year what did you do?

[@oscrm1760]

Sorry my english , have an jeep JL 2020 stock, want convert it in an mall crawler 26”x14” dna american truxx with 37”x13.50 , what is the gear what i need and if have reinforce the terninals and it differentials .

[@David-lo2gq]

So should I regear my 2.0 jl sport s to a 4.10 to run 33s?

[@raylenwilliams6683]

I have a stock 2020 gladiator sport s. I plan on getting a 2 inch lift so clearance shouldnt be an issue. Do i need to regear to run 35s? Im going to be mostly overlanding and on the roads. Dont plan on rock climbing or anything like that.

[@ARMASARMY]

What do you say about a DIESEL gladiator on 35s for overlanding, re gear or no need?

[@groot_offroad2958]

I went 4.88 with 35s. Went that just in case I went 37s later. Actually really like the setup. We daily ours and do “overlanding”

[@sgtbkr8217]

How is the Daily drive on it mpg and acceleration? And towing

[@groot_offroad2958]

Daily drive is great. On our 1900 mile 10 day trip from SoCal to Flagstaff, Grand Canyon, and St George. On and offroad. Averaged 16.3 MPGs with speed limits up to 80 in UT. Haven’t towed yet. But love the setup. RPMs are about 2200 to 2300 on interstate

[@groot_offroad2958]

@@sgtbkr8217 and acceleration is much better than the 4.10 and 35s. Enough for me to do regear before lift.

[@SoCalJeepGladiator]

@@groot_offroad2958 your rpm will drop to 1950 @ 65mph with 37s and 4.88s

[@mmldr]

My Rubicon 2024 comes with a 4.88 rear axle ratio with 35 tires from the factory.

[@adrianaguirre3205]

Great video. I kept watching it over and over to see if my question’s answer would come up. I’m running 33 BFGs on my 2021 Diesel Gladiator Sport with 3.73 gears. I just upgraded from the stock 245 tires. Should I re-gear, i want to keep my gas mileage and power. Also, what brand do you recommend? Thank you for your time. I’ve watched the ARB front bumper install and you convinced me so i purchased it. Thanks

[@justinmaness7265]

You are fine with stock gears withbthat wheel set.

[@dougenyart9243]

Good video but you also have to consider what engine you have as there are multiple I would brake them into 3 different groups 2.5 and 3.6, the 3.0 eco diese,l and the 392 they will need different gearing due to different torque specs me I have a jlu and it very seldomly go's in 8th gear with 4.10 and the 3.6 but it's flat where I live and go to the beach so it doesn't effect mpg that much in the future I will be going to 5.13 and 38s going to get a jt and put the curry 60 with the 5 on 5 lug nuts with 5.13 gears just so I will be able to keep up with the wife

[@mikestowe6136]

i have a overland with 35s n 373 gears its a hiway pricess i hate that it shifts down in the last 2 gears if the wind blows would a 410 be better i dont offroad

[@robl6044]

OK one that you mist is a JLU sport as I'm running 33" and looking to go 35" so I'm I find to go to 35" tires with stock axle

[@PythonVs1]

Yes your fine

[@DimplesChild401]

No. You need 4.10 for those 35’s and Dana 44 Axles if you don’t want to bend your current axles and mess up your transmission over time.

[@garyhenion9459]

Perfect timing I’m currently on the stock 3:73s in my sport gladiator on 38s thinking I’m going to a 4:88 when the bank account recovers some

[@NacionJeep]

How does it feel with 38s.? I have a Sport JL thinking of going 37 for Overlanding. Nothing crazy

[@garyhenion9459]

@@NacionJeep Doesn’t feel bad for around town or cruising some trails but it won’t find 8th gear on the expressway, it touches 7th but won’t hold it It did better in the dunes here in Michigan then I thought it would but didn’t push it to hard either

[@capt.stubing5604]

@@garyhenion9459 I’m running 37s on my JTR with 4:88s. Huge improvement in shifting through the greats. Great off and on road. I spend lots of time in 7th and 8th gear.

[@garyhenion9459]

@@capt.stubing5604 Great to hear It’s going in at the end of the month for 4:88s

[@chaseprosser2292]

So I don’t do anything crazy for trails. I daily drive my Jeep with 34’s and it does pretty well (8 speed transmission). It doesn’t go into 8th gear a lot and when it does, RPM’s drops to around 1800. I’m a little afraid to re-gear but eventually want to go to 37’s. After watching this video I’m thinking of 4:56’s. I have D30 in front and D35 in the rear. Will this be ok as far as teeth not being to close?

[@bud1lite]

Did you regear yet?I went to 315/70's on my sport and am thinking the 4.56 would be perfect

[@cartermackenzie1135]

My Jeep is on stock 33’s and I want it to take off like a rocket. What gears should I use

[@SoCalJeepGladiator]

I wouldn't change gears for off fhe line performance. I would only change to spin larger tires. Higher gears without larger tires will mess with your shift points and fuel economy.

[@uggglytuna]

How expensive to regear?

[@adriandriscoll8640]

So I have a sport JL 6 speed 2 door. I went to 285/75/17. I have a m186 front and m220 on the rear. I have been told by a lot of shops in VA that I would be wasting my money to read from 3:45 to 4:10. I don’t rock crawler, unless they have them on the forest trails. Any comments welcome

[@litoornelas6409]

What did you end up doing? Im still getting 50/50 about regearing. I have the sport 4 door JL on 33 ....

[@adriandriscoll8640]

@@litoornelas6409 I left it alone. If the shops are saying don’t worry then am good. With it being a manual trans the shift points aren’t an issue

[@paraengr0770]

Hi, I'm pulling a 2500 lb off road trailer with a 2022 Rubicon Gladiator with 4:10 gears. On the hwy rarely do I get out of 6th gear at 70 mph. How do I lower rpms when pulling? I'm running stock everything with 33" tires with a 3.6 gas engine. Thanks.

[@GP9railfan]

What about 3:73’s??

[@JEEPIMPACT]

I just got back from Moab,UT with my 4.10 rubicon gladiator with 37's and it was flawless. I killed it on the trails, I easily outperformed most other jeeps. the only reason I could see getting it regeared is to perform on the interstate at a higher level where it struggles at higher speeds.

[@SoCalJeepGladiator]

You're exactly right. 37s eith 4.10 is "fine", but you'll never see 8th gear on the highway. I regeared to 4.88 and every time I drive her, I thank the stars I did the regear.

[@Tinker3504]

Lol at you paying for an 8 speed and using 80% of the available range.

[@SoCalJeepGladiator]

@@Tinker3504 not sure I follow. I wasn't getting all the range until I regeared. I now get 8th gear all day long

[@Tinker3504]

@@SoCalJeepGladiator My comment was laughing at @hary 5150 for saying re-gearing isn't worth it. I have an appointment to go 5.13 later this month. I wholeheartedly agree with you.

[@SoCalJeepGladiator]

@@Tinker3504 ah. Now my brain is working lol

[@jamesmerkel9442]

As far as ppl ca jeep it may b 4.56 but in truck form will b 4.88. After that it is on u if u rear gear Or special order bronze, silver, gold or anniversary package lift & tires & gears. The Sahara could stay 4.1 in the strip Scramp extended cab model, ie budget model but 2 door is going away. If it doesn't sell Scramp Sahara is going away too.

[@jamesmerkel9442]

5.13/5.38 is a gold special ck the box 1 or other deal lifted from factory deal, ppl car.

[@FlyFish402]

I’m going to hope my JLU Sport S 3.45 gears can handle 284/70 r17 or 285/75 r17 until I can justify going to a 35 and have the cash for regear and rims.

[@paulsumpter9573]

I had a Sport S and put 285/70/17 (33") on it and it went off-road just fine.

[@wildwoody20]

So JL Rubicon with 37s I should put 488 or 513s?

[@m.e.9974]

488 best all round,decent mileage

[@alexanderrigda7002]

Was hoping to hear more about sport / Sahara going from 32 to 33 or 35. Any need to regear from that stock setup?

[@dylanfortin8506]

I drove a JK Sahara with 3.73s, 35s, the 3.8L engine, and the manual transmission for 2 years. Climbing the I70 hill to go up into the mountains sucked and required 4th and sometimes 3rd gear just to stay above 50 mph (and the RPM was up in the 4000-5000 range). 5th gear required to maintain 75 mph in any kind of wind or slight uphill slope (3000 RPM). It was fast for hardcore rock crawling but okay for normal trails. Next build phase would have been axles/lockers/re-gear. But since my use was mostly on-road or easy off-roading so I couldn't justify the cost and I wanted a 4-door vehicle anyway. Instead I got a JT Rubicon, and for now I intend to stick with the 4.10s on 37s. It'll be a few months before the wallet recovers enough to get the lift and tires and test it out though.

[@StayOnIt]

Alexander Rigda If going from 32s to 33 inch tires in a JK Sahara or Sport with Highway gears then you will be ok...for the most part. If that same JK is going 32s to 35s it will be prohibitive. If we are taking JL or JT then you can get away with alocstock up 37s on JTR for mostly highway.

[@jeepdogjl8687]

I had a 18 sport 345 gears with 35-inch tires 6spd manual 3.6 engine. Acceleration was good but on the highway, I never used 6 gear. I stayed in 5th so I wouldn't have to downshift when going up an incline. Only turned about 1600rpm at 70mph in 6th gear. I have a Rubicon now with 8spd auto 2.0T engine 4.10 gears 35-inch tires. It stays in 8th gear on the highway seldom down shifts. It turns 1900rpm at 70mph

[@kwrowe7105]

I have a 2021 Diesel Rubicon Gladiator. It came with the optional 3.73. I changed the tires to a 35". I'm overlander, mall crawler. Do I need to regear? Thank You.

[@CJBroncoF150]

you can i would go to 4.10

[@adrianaguirre3205]

Question, i too have a JT Gladiator Diesel Sport with 3.73 gears on 33’s. I want good gas mileage and will occasionally go off-roading. Should I re-gear and what brand do you recommend? Thank you

[@flatliner556]

@@adrianaguirre3205 yukon or Dana are the ones i'd stick with. G2 is okay. Had 4.56 yukons in my 18 jlu manual and going with 4.56 in my 20 jlu 8speed. Both were/are on 35s. If you are staying with 33s or maybe one day going to 35s, i'd say 4.56.

[@astorgar2026]

I have a high altitude with 35s.. 24 inch wheels.. 3.5 inch lift.. NO OFF ROADING.. should I re-gear from 3.73 to 4.10 ??

[@DimplesChild401]

Yes. Wheels and tires way too heavy. I hope you have done it already for the life of your drivetrain!

[@sgtbkr8217]

Got 2020 gladiator sport s with 4.10 but i want 37in and a 6.5in lift but i do allot of towing and hwy driving what be the best 4.88 or 5.13?

[@SoCalJeepGladiator]

My guesstimate would be 4.56. You should run stock gears first and see if your trans is always looking for 7th gear. Then maybe 4.56. Talk to your gear shop too

[@essedbl777]

A 6.5 inch lift???

[@sgtbkr8217]

evo 6.5 mEVO 6.5" ENFORCER STAGE 4 PLUS SUSPENSION LIFT KIT WITH EVO SPEC 2.5 KING SHOCKS

[@mattstiglic]

Why are you doing a 6.5" lift for towing and highway driving?

[@BrodyToYou]

Can I email you? I still have questions.

[@josephraker9835]

I got a 90 yj 6cly with 3 SPD. Auto dana 30 got a 8.8 rear . 4.5 lift open up fenders going with 35 inches tires what do you guys think about new gears??

[@CarlosRivera-ys5mb]

Hey broth I had gladiator rubicon I have 37 inch tire on it I want get 40’ do you think I need to regear to set 40 inch tire I don’t use for off road my Jeep is only for show and look good and daily drive to work

[@CJBroncoF150]

yes you should re gear for 40's

[@CarlosRivera-ys5mb]

@@CJBroncoF150 okay thanks broth

[@CarlosRivera-ys5mb]

@@CJBroncoF150 what gear you recommend me to do

[@mattstiglic]

@@CarlosRivera-ys5mb did you watch the video??

[@reymarez3712]

Dumb question, do both differentials get re-geared. New to 4x4

[@magma5.o_h191]

I have 35s on my sport not a off-road build besides very minimal. I just want 7th and 8th gear back. 4.10s or 4.56?

[@flatliner556]

I'm going with 4.56 but alot of vids i'm seeing are snubbing their noses at it as solely for "mall crawling". Anything is better than the p.o.s. 3.45 gears on my jlu.

[@bud1lite]

@@flatliner556 yes,we want 8 geras not 6 lol.Did you regear yet?

[@flatliner556]

@@bud1lite I did. I cruise around 2100 Rpm at 75mph. Shift points are a tad wonky even though I programmed the geara in with a superchips programmer. Took a while to get everything due to supply chain issues for master build kits.

[@bud1lite]

@@flatliner556 ok,cool,was wondering if 4.10/4.56 be better.Shifting between top two gears all the time at 55 can’t be good lol.Thanks for replying

[@flatliner556]

@@bud1lite no problem. If i had to do it over again, I'd probably done 4.88s on the eventuality I step up to 37s.

[@daveturton]

So I’ve read all the comments before asking this question because I didn’t see a clear answer from anyone. I have a 2021 Gladiator Willys with 3.73’s. I just got 35’s and I’m not seeing 8th on the hwys. Do I need to regear or stay where I am? I do not rock crawl. I go trail riding once or twice a year at best. Does going to 4.56 get any mpg back? I’ve lost 2 mpg but I knew that might happen. That does not really bother me though. CJ Offroad, please help.

[@DimplesChild401]

Regearing is your best bet. 4.10 is good enough for 33’s - 35’s. Any tires between 35’s-38’s would hit all gears including 6,7,and 8 better with a 4.88. 4.88 will allow the 37’s or 38’s to still ride a feel like a Stock Jeep. Whenever you go up in tire size, you will lose about 2 or 4mpg. I’ve learned to just take it easy on the gas pedal and to keep my speed down. Besides high speeds kills parts faster and wear out tires quicker anyway.

[@daveturton]

@@DimplesChild401 What do you think about 4.56? Is that just not the way to go? I don't really see me running 37's in the future. At the moment with 3.73 if I see 8th gear is with the wind at my back. My mpg is honestly better in town. On the hwy it's shit. I understand, and agree, about the MPG loss and that is fine. Will 4.56 or 4.88 get my torque back or at least be able to run a higher hwy speed than what I am currently doing? 80 mph seems tough. I'm in a 2021 Gladiator Willys.

[@jesselaporte7184]

Just picked up my 21 Gladiator Rubicon with the eco diesel (4.10) two days ago. Now talking to shops about what to do with lift and tire size. I DD it about 200kms/120miles a day. At best will do some over landing and some FSRs. Some shops say I should be okay with 37s the way it’s currently geared because I don’t have any plans for crawling or anything even close to crawling. However, other shop said even with 35s I should re-gear. Your thoughts? Also, what is the rough cost to do a re-gear ? Thanks in advance.

[@jbivvy420]

2k to 5k or more.

[@bigalforsyth]

Might want to check that. THere's no 4.10 option in the JL Wrangler eco diesel so i would think you have 3.73s in the ecodiesel JT as well

[@jesselaporte7184]

@@bigalforsyth your timing is perfect. I was just checking my window sticker last night. Oddly enough it states 4.10 early on in the breakdown and then further down it says 3.73. I didn’t think there was a 4.1 diesel either. Guess an error on the sticker

[@bigalforsyth]

@@jesselaporte7184 I’ve got a 21 max tow gladiator w the 4:10s and a 21 rubicon wrangler. I too thought it would have the 4:10 even though when we ordered it we opted for the eco diesel. What you are seeing on the window sticker is 4:10 is standard on rubicon but w the diesel it is now optioned w 3:73. Oh how I wish mine were 4:10 on the diesel one so it could spin bigger tires easier. It does fine because of how the torque multiplier is w turbo diesel but could be awesome w 4:10s

[@jesselaporte7184]

@@bigalforsyth ahhhh that makes even more sense now. The 4.1 noted in cause it’s in the Rubicon package. However, the diesel option overrides that and then backs it down to the 3.73 as noted later on. And yes, agreed. Guess just means I should regear, skip the 4.1 and go to 4.88 or 5.xx then laugh at those with 4.10 💪🏼

[@jamesmerkel9442]

If I get a better engine & trans in 10 speeds then gear is small issue but if stuck w/ 3.6 godless crap mini van engine & 8 speed trans gear is a big issue.

[@GladiatorJT20]

Do you have to Regear it for 35’ I gave a 2020 gladiator overland ?

[@SoCalJeepGladiator]

No. You'll be fine. I ran that setup for a while without issue. When I went to 37s, I switched to 4.88s

[@GladiatorJT20]

@@SoCalJeepGladiator thanks bro

[@JohnyAyala3]

@@SoCalJeepGladiator How much does it cost to rehear and where do you take it?

[@SoCalJeepGladiator]

@@JohnyAyala3 it cost me around $1200 and that included a follow up 500 mile check and drain and refill diff fluid. I went to Rebel Off Road in Laguna Hills CA

[@attnielthomas7856]

Good video. I am currently having my 2020 JL Wrangler regeared. I am also going a step further by having an After truss, gussets, and RCV axles (rear are Yukon's). I chose 4.88 (G2 ring and pinion). I run 35 inch tires and this is my third Wrangler over the years I have had regeared. My Jeep is a disaster prep vehicle that I daily drive. With nearly $27K in parts and installation, I will never be going off-road. As stated before, my Jeep is being built for a disaster or society collapse. Best wishes and keep the Jeep videos coming.

[@Wrangzilla]

If a major disaster or society collapse happens, that Jeep isn’t going anywhere. You won’t be able to fuel it up.

[@phuckauthority5220]

You "will never be going offroad"? When the shit hits the fan, and if you can find gas, offroad is exactly where you will want to be.

[@christophermartinez5314]

👍👍👍👍

[@themanthelegend7048]

I wanna run 35s and tow a lot. Probably going with 4.56 sine I have the 3.73 gay gears.

[@chrisanddeinnasadventures7857]

When the warranty is up.

[@JeepCherokeeful]

Nobody with a built Jeep off roading on 40’s is running factory gearing so...unless it’s the diesel.

[@junwang4314]

Problem is people can't see if you regeared...

[@phuckauthority5220]

LOL. I should sell stickers that indicate that this rig is re-geared. Mall crawlers can put it next to their ARB stickers. After all it's not the gear they want, its the look. I''ll charge em 5 bucks vs. 1800$. The money they save can be used for more overland gear that they wont ever use or even know how.

[@steamman9193]

Another regear opinion with no math or accounting of the transmission gearing. If you look at the 8 speed transmissions 7th gear on 37” tires it ends up as an almost identical ratio to a stock sport. If you turn off the gear indicator you would never really know the difference.