400ex walk around

I walk around and description of some of the mods and custom upgrades. I missed a good bit of stuff but like i said there are alot lol.
Please ignore my dirty garage haha.
Also i would also like to add. I dont work for mud motorsports or anything like that. His shop is out of indiana. Im from ohio. But Josh is a really good guy. His prices are really fair and he treats everyone even the little weekend warrior racers like me like he would treat a pro. He also did that custom hump seat on there also. One of the many things i missed.

[@jlatt0319]

one of the nicest 400s ive seen, it literally has it all and some! great video, and even nicer quad broski!

[@brentpfeiffer4043]

Thanks bud! I appreciate it!

[@melandaverywilliams3288]

Man that is a very sweet ride. I am in the process of upgrading my 05 400 ex Great job!

[@brentpfeiffer4043]

Thanks! If you have any questions about your build feel free to ask away! I like helping people with there builds. And 400ex's i know like the back of my hand. I still need to do an updated walk around. As the quad has changed alot since this video.

[@shanegump8989]

​@@brentpfeiffer4043 how can I call u... I have a couple questions to ask

[@SJ_999]

The ram air intake is a super cool idea never seen anything like it before

[@brentpfeiffer4043]

Thanks! I appreciate it!

[@Davido50]

Very nice machine! I'm out of Ohio myself. Where is the performance shop you were saying you used? Looking for some quality engine work for my YFZ450X. Thanks!

[@brentpfeiffer4043]

Thanks! I actually used a few different places. Mud motosports is out of Indiana. Then just recently i used BNR they are in North Lima. Which is as far east as you can go in ohio. Right on the PA border. A mile from last exit on turnpike. Cant honestly vouch for there engine work. I did that all myself. But all the services i used from both places were really professional and looked great!

[@Scott00]

I doubt ill get a reply from this old video, but how did you convert to needle bearings? Any part numbers?

[@brentpfeiffer4043]

I will always reply to this video. I do not have any part nunbers sorry. What i did was measure the inner diameter of the pivot points. I had to drill about half a mil out to get a proper press fit and got bearings and seals that were a press fit. I had to spin the shafts down in a lathe also. It was about 5 years ago and i never had to touch them again. I have since sold the whole setup and went to lonestar DC-4 long travels

[@Scott00]

@brentpfeiffer4043 Thanks for info, I just installed these arms but was worried about how long the bushings would last, I'm not sure if they have since redesigned them or if they still use the same material you said doesn't hold up.. So far I just grease the hell out of them and hoping for the best.

[@brentpfeiffer4043]

No problem man. Glad to help. They were using delrin back when i got them. I went through 3 sets of bushings in a year. They were garbage. Alba was great about it tho. Sent me them free of charge everytime. They just didnt hold up.

[@jeremyperez5293]

Awesome build 💪! What mods did you have to make to mount the yfz carb and make it fit?

[@brentpfeiffer4043]

@@jeremyperez5293 its wasnt just a bolt on fit for sure. First the flange on the cylinder head had to be heated and expanded and with alot of force it did eventually pop in. First time it took alot of force. Since that it has gone in and come out easy. Airbox side i had to cut the factory tube. Oval a piece of exhaust pipe on one end and used a rubber ferco for the other side that fit both the pipe and carb and hose clamps on all of it. Where it got tough was the carb on a 07 yfz450r is the same as a yamaha motorcycle. This means its set up for a push-pull throttle cable. Meaning its very tall at the top. I had to cut off the top corner of where the push cable would have been. And jb weld the hole shut so it didnt get packed full of mud. I also had to shim the back of the gas tank up slightly with just a few washers under the white plastic shield under the tank. If i didnt it would have been resting on the top slide cover on the fcr carb. Being honest i think you can find fcr39mx carbs off other bike and quads that fit easier. But i got the one i have for a killer deal. And modifying it wasnt out of my ability. I do 100% suggest the r&d flex mixture screw. And the r&d powerbowl 2. It has an adjustable leak jet and can be done with a long flat tip screw driver while fully installed and even while running. I have to adjust that alittle everywhere i go. And only way to change that leak jet normally is to completely remove the carb bowl and its a tiny little flat tip that normally strips very easy.

[@jeremyperez5293]

Thank you very much for getting back to me. This is really helpful, appreciate the help!

[@brentpfeiffer4043]

​@@jeremyperez5293no problem! Glad to help!

[@jeremyperez5293]

@@brentpfeiffer4043 Would you happen to have uploaded a video installing the carb? If not, would you happen to have pictures you could share? I got a good deal on a YFZ carb and aiming at starting the swap on my 400 next week.

[@Clapped_400ex_rider]

Dream build if it had a full empire exhaust

[@aidenbecica6396]

How did u get that radiator fan on I really want to put one on mine

[@aidenbecica6396]

???

[@brentpfeiffer4043]

Sorry i have responded twice and youtube has removed them i think? I have pictures but no idea how to get them to you. I had to fabricate custom mounts for the 4 inch spal fan.

[@aidenbecica6396]

Pm me on face book aiden Cileone

[@brentpfeiffer4043]

I dont have a facebook bro. Sorry.

[@aidenbecica6396]

All good where did you buy the fan at n where did u fount it

[@2bxrandon]

Is the front plastics one whole piece? I want to get front plastics like that, I also removed my 400ex front lights

[@brentpfeiffer4043]

It is a 04-05 trx450r maier hood. On stock 05 400ex front plastics. When you remove the stock hood on a second gen plastic it has all the tabs and holes that line right up with the 450r hood. I did trim the bottom edge on the plastic just alittle bit. But i ride in too much mud to remove them completely.

[@seanwilbur8296]

That’s a badass 400, I have a 2013 400x and it’s all suited up for mx but there’s some other things I’m looking at. I have Alba racing nerf bars and there ok, not really that durable but they get the job done, but I want rath nerf bars but they cost 500 and that’s crazy for nerf bars but those houser nerf bars you have look great but i have no clue where to find them and if there costom, also I still have the factory grab bar/sub frame, and I would love to take it off and put that hmf grab bar u out on and if u have any input for a new better carb that would work pls let me know,

[@brentpfeiffer4043]

The houser nerf bars i have were right about the same price as rath. Houser doesnt make 400ex nerf bars anymore though. I was lucky enough to live 45 minutes from there headquarters. After talking with them they told me the trx450r ones are identical besides the cross bar. They hooked me up with a cross bar change to work with my 400ex. They did tell me then they were discontinuing the 400ex nerf bars. The subframe was done by mud motorsports in indiana. They welded the tabs and removed the factory bar. They also powdercoated and gusseted it for me aswell. At the time which was about 4 years ago it was 350 dollars plus shipping. The carb i would 100% go with an fcr carb. They are far superior to any round slide carb. I am running a 39mm fcr off an 07 yfz450r rightnow. Top 5 best mods i have done. Tuning it is a real chore. But man does it make some serious power and the throttle response is like fuel injection. I would venture to say i have somewhere around 800 dollars in the fcr swap. Carb. R&D powerbowl. Different needle. And jets. Its expensive and requires alot of tuning ability. The fcr has more jets(leak jets,air jets, & fuel jets) and more adjustments that can be made.

[@Sum-wk5li]

Also your nerf bars. You said you worked with houser to make a different cross bar to make them fit. Any idea about how I would go about asking them to do the samething? like those alot more than the team Alba I've got.

[@brentpfeiffer4043]

They offered them for the 400ex when i purchased them. But what they told me when i picked them up from there headquarters (about 35 minute drive) they told me they were trx450r nerfbars that all they did was open the box and put a different cross bar in. I always try my best to purchase from local places and they were very easy to deal with. But i do know alot of places are stopping production of 400ex stuff. I would send houser and email and see if they still make the 400ex pro bounce nerf bars. They may still have some cross bars and 450r nerfbar kits?

[@kingkracker1998]

living in indiana myself, i mess with mud motor sports all the time. good place. only place in the state with a ATV Dyno

[@brentpfeiffer4043]

Heck yeah man. I have had more than a few conversations with Josh and all have been really pleasant. They treat the weekend warrior like they would treat any pro team. Which is leaps and bounds better than alot of other places out there rightnow.

[@kingkracker1998]

@@brentpfeiffer4043 wanted to 5ake my quad up there to have it thrown on the dyno an get my quad properly tuned, but they had like a 4 mnth wait! i should probably call them, that was like 4 mntha ago, so i might be able to get in, either that or ill wait till summer. i wanna take everything off my quad thats greasable and clean n put fresh grease down. also need to do a vavle adjustment on her, but gonna do that this week. wanna get her in tip top for the summer. got a yfz450r, 2009. fuel injected. got it this yr for 3500. already had most of the mods i wanted on it. so that was nice. just needed some bearings, new chain n sprocket, not sure if the valves need adjusted yet, but wanna do it anyways. she seems fine, fires right up, np.ofcourse i added tons of stuff to it anyways when i bought it. shes a bad ass!

[@brentpfeiffer4043]

@@kingkracker1998 my take on dyno tuning is generally they tune for max power and torque and leave alot of reliability and rideability on the table. I do all my own tuning and my quad fires and runs flawless. But all my experiance is from carburetor tuning not fuel injection. I just always worry when you try to squeeze every single bit of power out of it. Because lean is mean. But topends arent free.

[@kingkracker1998]

@@brentpfeiffer4043 if i knew how id be all about it. lol

[@brentpfeiffer4043]

@@kingkracker1998 wish i could help you there bud. But the only fuel injected things i have ever owned is my truck and my wifes car. Always had carbs to jet on all my quads and bikes. I do know alot of times you can get a tune thats pretty close to your setup online alot of times. You gotta get some kind of tuneable ecu though. Dynojet or something like that. I was at a buddys track for practice one time and he has a full TDR build and he kicked that thing like 200 times before it started. I said who tuned that thing? He said it was just dyno tuned by TDR. I just shook my head and hit my start button with no choke right out of the back of the truck and it fired in half a revolution and idled while it warmed up. I said i dyno tuned mine also. Using my seat of the pants dyno. LoL

[@adamlemaster5083]

Im a ohioan as well beautiful quad

[@brentpfeiffer4043]

Thanks man! Where do you ride? We hit Perry a few times and year and go up to bundyhill in Michigan 2 or 3 times a year usually. No where else closer to ride for us in northern ohio.

[@Sum-wk5li]

How did you fab up the air intake on the side? Also the aluminum bracket on the outside where do you get that?

[@brentpfeiffer4043]

What i did was i got some of the flexable intake tube from autozone. 3" and i used a plastic boat intake flange i found on ebay. The aluminum bracket is actually what they use on drag cars that do a fender exit exhaust. Found it on ebay aswell. The 3" flexable intake tube actually threaded right into the boat intake flange and then i just drilled the holes to match the aluminum bracket. The other end of the flax tube goes right on the airbox where the factory snorkle would have gone. I traced a piece of outerwares off an old air box cover i had and put it over it to keep dust and stuff out. Cant honestly say it does anything for performance. But i think it looks really cool and it is ducted into the airbox so its functional.

[@Sum-wk5li]

I appreciate the info man! Nice job on the quad. Have had mine since last may. Like you mentioned the whole 💸 thing. It's got out of hand. I enjoy the whole hobby though. All that matters.

[@brentpfeiffer4043]

@@Sum-wk5li for sure man! Always glad to help! I do my best to forget about the money part of it. My wife always reminds me haha. Keeps me out of trouble though and i do love riding and wrenching.

[@graysonreed6100]

Nice quad how did you get the nerf bars to fit

[@brentpfeiffer4043]

Thanks! They are built for a 450r. But houser is a local company to me so i drove there and they have a different cross tube to make it for a 400ex. Everything else is identical. Just the tube that connects them in the front is different.

[@graysonreed6100]

Brent Pfeiffer i have 2003 400ex it’s built

[@brentpfeiffer4043]

@@graysonreed6100 Very nice man! Whats done to the motor? I got some big plans for my motor this winter. Involving a custom made 87mm CP 12:1 stroker piston and a hotrods +4mil crank.

[@graysonreed6100]

Brent Pfeiffer it a 460ex 440 big bore je custom made 14:1 compression piston +4stroker crank ported and polished kibble white +1 vavles web cam hardened rocker arms heavy duty head studs light weight fly wheel fcr 43.5 carb it put down 52hp on the dyno

[@brentpfeiffer4043]

@@graysonreed6100 Holy balls! Thats sick! I will never run a 89mm piston. Just to much heat to try and deal with. But i can understand the name banshee killer. Thats wicked!

[@jlatt0319]

do u know what size needle bearings i need for my 2001 400ex? they are shot an if they are better id rather go with them.. and u def earned a subscriber..and any tips on changing my swing arm bearings as well, i am about to order them ive seen video where they drill and tap the end or somethin since i guess its hard to get out.. i saw a special tool for it but if u know of easier method that would be helpfull..thanks in advance

[@brentpfeiffer4043]

The needle bearings for the a-arms are for alba +2 gullwing arms only. Not stock a-arms or anything else. Stock a-arms use bushings. I would use pivot works for those and the swing arm bearings. Replacing swingarm bearings can be a super hard task. Most of the time the bolt is seized in the case halves of the engine and requires alot of force to come out. I have had to torch them out and 90% of the time they have to be cut out in sections. I had one we worked on for about 5 hours as it was seized in every bushing.

[@jlatt0319]

@@brentpfeiffer4043 ok thanks i appriciate the advice for sure

[@Sparaco487]

What plastics are those and where did you get the graphics?

[@brentpfeiffer4043]

Stock plastics. Cut the front fenders just a small amount. And graphics were done by cycleworks.

[@Sparaco487]

@@brentpfeiffer4043 i want to do the hood like you have and get rid of the head lights

[@brentpfeiffer4043]

@@Sparaco487 Gotcha. The hood is a maier trx450r hood.

[@417x11]

@@brentpfeiffer4043 can the hood go over the headlights on a stock 400ex? Im gonna put a fourwerx hood on mine

[@brentpfeiffer4043]

@@417x11 Im not 100% sure. I removed the whole assembly. Just looking at it i don't think it will fit though. Headlight assembly looks to stick out way to far.

[@Slow-Cloud6130]

Hi, sorry it’s a bit late, what did you do to remove the lights and put that like cover? What’s the name? Thanks

[@brentpfeiffer4043]

My quad started life as an 05 400ex. So putting the hood on required almost zero modification. Just remove the headlight and factory hood that just pops on and replace it with a maier 04-05 trx450r hood. The holes lined up with the places the factory hood attatched.

[@Slow-Cloud6130]

@@brentpfeiffer4043 ok, thank you so much. I also have a 2005 400ex and I want to build it up slowly

[@brentpfeiffer4043]

@@Slow-Cloud6130 no problem at all! Glad to help!

[@jackstremming9163]

Do you know where you bought the kit for the dash? Also was curious where you got the needle bearing upgrade kit?

[@brentpfeiffer4043]

The dash was a part of a modquad dash/riser kit. P#PHAT2-RBLK. Needle bearing upgrade i did 100% custom. I bored each pivot point out to a press fit for a specific size needle bearing and put seals on both sides aswell. I then turned the shafts down on the lathe.

[@jackstremming9163]

Brent Pfeiffer Thanks, I just got a 400ex and the bar pad blocks the lights so I needed something to relocate those lights.

[@brentpfeiffer4043]

@@jackstremming9163 no problem bud! Glad to help!

[@chadramsey3796]

You should put a 440 big bore with vp115 and get the cycra pro bent barkbusters and put hyper bead locks

[@brentpfeiffer4043]

Check out some of my other videos. I did a custom stroker 87mm. So when you do the math it is technically a 440cc. I run vp110 and have hiper beadlocks on my trail/xc set of rims and tires. Never was a fan of the cycra hand guards though. I like my acerbies rallys. They have held up through alot of hard crashes.

[@chadramsey3796]

But one thing its hard too beat a ole tractor 400ex them are the best quads honda has ever built I believe

[@mikecolwell5387]

Can you post links to do the air intake tube ? Like where you got the tube and ring for plastic and sizes

[@brentpfeiffer4043]

3" flexable intake tubing from autozone. I then ordered a 3" intake tube flange for a boat off ebay. That i was able to thread the intake tubing into and gave me a flange to put bolts into. The stainless piece is off ebay aswell. Its actually for a bumper exit exhaust for a race car. It goes around the pipe so they can cut the plastic out further and not melt it. The air box end the 3" intake tube actually slides right over the factory rubber. I put a piece of exhaust pipe in it to make it rigid and used a clamp on it. Hasnt came off yet. The intake tube will oval alittle when you put the seat on.

[@mikecolwell5387]

@@brentpfeiffer4043 really 3" fit in there? You don't have the link you got the fender flange from do you ? And thanks bro for the reply

[@brentpfeiffer4043]

@@mikecolwell5387 if you could find 2.5 i would go with that. The 3" fit but its a hell of a tight squeeze. KZbin likes to block me when posting links to anything for some odd reason. But if you type "fender exit exhaust bezel" into ebay it will come right up with lots of options and sizes and shapes.

[@mikecolwell5387]

@@brentpfeiffer4043 awesome thanks bro

[@brentpfeiffer4043]

@@mikecolwell5387 no problem bud! Glad to help!

[@jeimslopez8089]

Nice video

[@brentpfeiffer4043]

Thanks man!

[@cknight4440]

Do the trx450r hoods line up good?

[@brentpfeiffer4043]

On 05 and up plastics they line up with the factory holes for the hood. Remove the headlight and put bolts with a nut through where the rubber grommits are for the factory hood. I riveted the bottom tabs to be sure it was secure.

[@morganthechevyguy]

Im currently rebuilding my 2003 400ex with wiseco 10:1 piston 416 and Ferrea +1 valves. I was not informed that the valves my interfere with the piston. Im only using a Stage 1 hotcam. Will i need my piston machined?

[@brentpfeiffer4043]

When we clayed the topend and measured my wiseco 11:1 87mm piston it for sure did. They were gunna be way to close for comfort. Now my custom cp 87mm stroker piston im having made does not need anymore clearance. According to them atleast. I will be claying it to be 100% sure.

[@morganthechevyguy]

@@brentpfeiffer4043 Awesome thanks! I sent my head and jug to CT Racing. He convinced me to buy a JE piston. They are already clearanced for +1 valves. Wisecos need to be machined. So now i got an extra Wiseco 10:1 87mm piston brand new in box

[@brentpfeiffer4043]

Thats good. JE is actually a lighter weight piston. I wanted them to make me my stroker piston but couldnt ever get anyone to answer my emails or phone calls. CP was the only place that even acnowledged my existance lol. CT racing will get you hooked up though! Atleast you dont have a 500 dollar custom piston new in box like i do. Since the first one was made wrong. Not CP's fault though. The thing is a work of art. Gunna make a nice paper weight lol

[@chadramsey3796]

I'm here in ashland kentucky not far from ohio just across the river

[@brentpfeiffer4043]

Im from about as far north in the middle of ohio as you can go. If you draw a line straight up the middle im 20 minutes from being in the water lol

[@chadramsey3796]

@@brentpfeiffer4043 we need to go ride sometime bud you still have the 400ex quad

[@brentpfeiffer4043]

@@chadramsey3796 oh yeah its gunna be buried with me at this point. With how much time and money i have in it. The closest i go to you would be perry state forest. Down by columbus.

[@donniegardner6294]

What did you use to cap off the end of your subframe?

[@brentpfeiffer4043]

Mud motorsports actually did it. They just used those push in plastic plugs. Not sure of size though.

[@donniegardner6294]

@@brentpfeiffer4043 I’ll have to look into that. I appreciate the response back

[@brentpfeiffer4043]

@@donniegardner6294 no problem bud! Glad to help!

[@joshfortin2640]

Is that carrier greasable through the swing arm

[@brentpfeiffer4043]

Yes it is. Its a lonestar carrier and a lonestar swingarm.

[@joshfortin2640]

@@brentpfeiffer4043 thanks for the info sick build by the way

[@brentpfeiffer4043]

No problem man. Glad to help! I appreciate it. Got alot of time and money in it. And getting ready to drop more. The bottom end is starting to knock....

[@joshfortin2640]

@@brentpfeiffer4043 totally worth putting the money into them they are bullet proof I have an 02 bone stock with a slip on scooped it up for 1200

[@brentpfeiffer4043]

Oh i totally agree. This is the stock crank from 05. And i beat on it hard. The previous owner didnt know there was even oil in it. I did the first oil change on it in 2009. It came out like sludge. Put a clutch and a 416 kit in it and have been railing it ever since. I dont want to think about the total amount of money i have in this quad. Its painful.

[@ThatexMason]

Where did you get the needle bearings for the a arms u think they will work on other alba a arms

[@brentpfeiffer4043]

I did them custom. I drilled out the a-arms about .020 and micrometered them. Ordered wide needle bearings off line that were now a press fit for the size i drilled them to. I then spun the shafts outer diameter down to size on the lathe. Got seals for both sides that were the same size inner and outer as the bearings and shaft. Greased them to keep water out. Full custom deal. No kit out there i found would fit so i made it myself.

[@ThatexMason]

Do you know if you can find needle bearing that are the right size that way you don’t have to drill out the arms or spin down the shafts

[@brentpfeiffer4043]

@@ThatexMason nope i would have 100% taken that route if it was available to me. The ones i used were as skinny as they make that can handle the load and forces of motocross racing.

[@ThatexMason]

Yea i dont have the ability to do that

[@ThatexMason]

I just had another ideas u think that you gain put oem bushings/ oem style bushings in there

[@jafo5421]

what part of ohio are you from??

[@brentpfeiffer4043]

Up north. 20 minutes south of cedar point.

[@fate04-yt4]

What kind of a arms are they? Ive been looking for one

[@brentpfeiffer4043]

They are alba long travel gull wing a-arms. I purchased them about 6 years ago. And im pretty sure alba stopped making them 2 years ago. You may be able to find someone selling them but there pivot bushings were garbage and i think alot of people threw them away because of it. I did a custom needle bearing upgrade on mine and they have held up great for me. The arms themselves are 4130 chromoly so they are plenty strong. If anything maybe too strong as they have bent a few of my frames in crashes before i did the gusseting. Alot of other a-arm brands would bend long before bending the frame.

[@fate04-yt4]

Thanks man i appreciate it dope quad btw

[@brentpfeiffer4043]

@@fate04-yt4 thanks! It has come a long way even since this video. It now has a fully custom engine build. 87mm stroker. It looks 100% different too. I keep trying to do a follow up video with all the new mods but havent had the spare time as of yet. I do have a few videos about the build on my channel but not a walk around like this one.

[@jacewalton752]

Did u buy the plates under your front fenders

[@brentpfeiffer4043]

Yes they were made by cfm. I purchased them on ebay a few years ago.

[@garrettmcnabb2943]

Brent Pfeiffer are they plastic?

[@ko4wyt245]

@@garrettmcnabb2943 no

[@brentpfeiffer4043]

@Garrett Mcnabb no they were made of aluminum. They did end up breaking this year and i changed them to levy racing ones. They are made of plastic and will flex in a crash.

[@bradleydunford725]

How did they do the rear grab bar mounts like to do that to my buddys 400ex

[@brentpfeiffer4043]

I sent my subframe to mud motorsports. They do sell the tabs to weld on yourself but i had them powder coat it while they had it. They cut the stock bar off flush with the brake light mount and they use 2 small plugs to plug the holes. Then they weld the tabs on. The tabs go up to the 2 lower subframe bars and tie in for extra strength. They are plenty strong. The hmf grab bar i had on there snapped clean off when i was trying to pull it out of some sticky mud. But the mounts didnt move at all. I have since broken pretty much every grab bar i could find until i found an RJR one.

[@bradleydunford725]

@@brentpfeiffer4043 ok thanks

[@brentpfeiffer4043]

@@bradleydunford725 your welcome! Glad to help!

[@bradleydunford725]

@@brentpfeiffer4043 can you mount any grab bar up to those mounts. And does it still allow you to keep stock tail light

[@brentpfeiffer4043]

@@bradleydunford725 it makes it fit a 04-05 trx450r grab bar. And yes mine still has the stock tabs for the brake/tail light.

[@adamkane9410]

What spring rate and valving did you do to run the gt thunder rear link

[@brentpfeiffer4043]

Not sure. I had Ishock build them to my specs. I told them i was running the gt thunder xc link and +1 swingarm. They did the rest. Shocks are due for service so they will be going to BNR this winter to be rebuilt. I also have since gotten rid of the gt thunder xc link. Couldnt stop bottoming out. Feel like they didnt set them up right before.

[@adamkane9410]

Brent Pfeiffer I have the gt thunder front a arms and shocks and wanted the rear link . But if it didn’t work for you I’m not gonna waste my money .. unless you were still running the stock spring that would explain why you were bottoming out

[@brentpfeiffer4043]

In all honesty you cant really get the gt thunder link anymore. Its hess motorsports making it since gt thunder is long since out of business. As far as springs go i have no idea. I wasnt super thrilled with Ishock as they took all my specs and i got the shocks from elka with a spec sheet and they didnt follow any of my info. I contacted them and they "claimed" none of it would make a difference. But i had to crank alot of pre-load into it to get a ride height even close. When i switched back to the stock link i was able to remove almost all of it. Its sad how much money goes into these builds and these places just fall short on everything. My lonestar swingarm powder coat looked horrible. Took half a year to get it so i wasnt sending it back. But it was over 800 dollars. You would think for the price it should be perfect.

[@adamkane9410]

Brent Pfeiffer right now I’m running the stock shock spring in the rear wound all the way at the lowest setting, I rode last Sunday didn’t seem to bottom out . Was hoping to revalue/spring with lowering link to make it perfect

[@brentpfeiffer4043]

Stock shock the gt thunder link worked perfect. I actually had it on before the elkas and it was zero problem.

[@wandalawhern1033]

What did you paint your header with?

[@brentpfeiffer4043]

Its not paint. It a hmf blackout series header. They ceramic coat them i think? Not 100% sure on that though. But you can buy them right from hmf like that.

[@wandalawhern1033]

@@brentpfeiffer4043 Ok. Do you think black Header heat paint will give the same look?

[@brentpfeiffer4043]

@@wandalawhern1033 It will but i have never had good luck with that stuff. It tends to fall off after a few rides no matter how hard you bake it on. I have followed the directions perfectly before and still had it get soft and eventually crack and fall off.

[@brentpfeiffer4043]

**Update** first time cleaning the header the coating came right off. So ceramic coating doesnt even hold up. It has since been blasted with aluminum oxide and painted with bbq paint and baked. Then wrapped with dei wrap and sprayed 2 full cans of bbq paint into the dei wrap and then baked again. Seems this is the only way to get anything to hold up for longer than one or two rides.

[@chadramsey3796]

Recluse racing clutch

[@brentpfeiffer4043]

To my knowledge they never made one for the 400ex. I have a buddy with one on his ktm525 and honestly im not a fan anyway. I did a full top and bottom end rebuild since this video and part of that rebuild was a full hinson setup.

[@austingallagher2370]

How did u wire up the fan like that???

[@brentpfeiffer4043]

What i did is i found the head light power wire. So took out my tester and found the one with 12v that i could switch on and off with the headlight switch. I then took the positive wire from the fan ran it with an inline fuse to that wire. The ground i just ran to the coil frame ground right next to the fan itself. I did also run a small indicator light off it aswell so i can see if its off and on. Because i have bumped that switch before and turned it off on accident. The reason i did it is because i got tired of constantly replacing the "water proof" switches. They would last a few rides at best. Sometimes less.

[@austingallagher2370]

Brent Pfeiffer I wanna do this to a 300ex I’m guessing it would work the same becasue they both have headlights and the switch

[@brentpfeiffer4043]

Yeah it should work no problem. Anything with a head light and switch will have to have a 12v power wire for the headlight to work. Find that wire and make sure you use an inline fuse of the proper amp rating. The spal fan comes with directions on what specific amp fuse to use. I use a 5 amp on mine. They say the lower the better as to not burn up the fan if something happens.

[@austingallagher2370]

Brent Pfeiffer did ur fan have a connecter on the end of the wires. If so what do I do with that?

[@brentpfeiffer4043]

@@austingallagher2370 My fan just had cut and stripped ends on it. I used a 5/16 water proof ring terminal on the one side for the ground. And got an inline fuse with wires already on it from autozone. Used 2 blue water proof butt splices and sealing heat shink tubing for good measure.

[@davidblum_]

What year?

[@brentpfeiffer4043]

Alot of different years. 07 frame. 05 motor. 06 plastics.

[@jerkfalife]

What oil did you run ?

[@brentpfeiffer4043]

Amsoil 10w50 dirtbike oil

[@jerkfalife]

@@brentpfeiffer4043 Did it benefit the bike in any way?

[@brentpfeiffer4043]

@@jerkfalife amsoil in general i feel did. It made it make less concerning noises when on the rev limiter noticed that right away when i switched from gn4 or even the lucas i ran before amsoil. But when i did the custom everything stroker motor build i went with the 10w50 as kind of a best of both worlds. Alot of built race quads run 20w50 and so far the 10w50 seems like the best of both worlds.

[@jerkfalife]

@@brentpfeiffer4043 Thanks for the information I’m going to order me up some for my bike this week and hopefully I’ll get it before the next time I ride and other recommendations for the 400ex such as mods ?

[@brentpfeiffer4043]

@@jerkfalife all depends on what your looking to do with it. I will tell you if you go for a full big bore build the stock carb is a huge restriction. You will out run that restrictive round slide fast. One of my favorite mods and most notable gains was the fcr carb. Its as close to fuel injection as you can get. Also it 100% solved all the "cold blooded" 400ex problems. With the fcr it starts in zero degrees first time everytime. Throttle response is instant. Now it was one of the more expensive mods but well worth it in the end.

[@derrickmanche1082]

Is that a 450 grab bar

[@brentpfeiffer4043]

Yes it is. I sent the subframe to mudmotorsports to gusset powdercoat and install grab bar tabs. It fits any 04-05 trx450r grab bar.

[@derrickmanche1082]

@@brentpfeiffer4043 ok sweet always wanted to put one on but wasn't sure and nice bike and you ever see the bigger oil cooler instead of putting a fan

[@brentpfeiffer4043]

@@derrickmanche1082 thanks man! Yeah. Never really could make sense of why its needed though? If you jet the quad right it will run plenty cool. Maybe if all you did was ride sand dunes or lived in the south it would be more necessary? Not sure? But my stroker build runs oil temps of less than 200 degrees. I do run the fan all the time though also.

[@luisdejesus8243]

De🇵🇷👍

[@brentpfeiffer4043]

Thanks!

[@haydengattsek3269]

What kind of throttle cable do use use I have a carb just like yours and I can’t find a throttle cable

[@brentpfeiffer4043]

Carb is a fcr39mm off an 07 yfz450r. Cable is a motion pro +2 for that same exact quad.

[@haydengattsek3269]

Brent Pfeiffer thanks but I can not find it yet but I will keep looking

[@brentpfeiffer4043]

@@haydengattsek3269 05-0315 is the part number from motion pro. I got it off ebay. They are like 12 dollars.

[@haydengattsek3269]

Brent Pfeiffer Thanks man

[@brentpfeiffer4043]

@@haydengattsek3269 your welcome bud! Glad to help!