450R brake conversion

[Rich250RRacer]

This are pics of my rear brake conversion on one of my 250R's. It was a very easy switch and much cheaper than replacing a stock 250R caliper, if they're still available. I will list the part numbers so anyone who is interested can price it out on Service Honda's site. At Honda retail it would cost about $200, but should be about $150-160 through Service. If you want to use an anti-fade, figure in the cost of a 450R unit. I had one on the quad with the original stock brake set-up, but it will not work with the 450 system. For the time being, I'll run a stock nut, but a 450R anti-fade is on the way. You will need a caliper sub-assembly, caliper stay (plate caliper mounts on), rear disc, disc hub, and rear brake pads. I was going to hold off on this until I purchased an anti-fade, but when I ordered the rear disc, it came with the stock hub. This is the first one I've seen come this way, I've replaced three rear discs on my 450 and none of them came with the hub. The only problem I ran into was the depth at which the 450 brake hub sat in the 250R carrier. Apparently 450 bearings are set deeper into the carrier. This required 2 8mm spacer washers between the caliper stay and the caliper. Be sure to have a micrometer handy to measure the thickness of these washers, since I just used some bulk washers I had in stock. Thickness isn't very critical, just as long as both washers are within a thousandth or two of each other. If your washers are different thicknesses (and I've noticed as much as .020") the pads will wear unevenly. Anything between .055 and .070 will work and this will put the disc in the center of the caliper bracket. I plan on doing the front conversion also. When I do, I will post pics, a parts list and any problems I encountered.

43150-HP1-006 caliper sub-assembly
43220-HP1-000 caliper stay
43251-HP1-003 rear disc with hub
Pads of your choice.

http://i228.photobucket.com/albums/ee108/rich250rracer/450rbk1.jpg
http://i228.photobucket.com/albums/ee108/rich250rracer/450rbk2.jpg
http://i228.photobucket.com/albums/ee108/rich250rracer/450rbk3-1.jpg

[zedicus00]

heres the list for a 450r front end on a 250r not counting brake pads an sum lil misc stuf... this is a very nice upgrade

51210-HP1-000 - KNUCKLE, R. FR. - $65.66 - 1
51260-HP1-000 - KNUCKLE, L. FR. - $65.66 - 1
45150-HP1-006 - CALIPER SUB-ASSY. L - $40.31 - 1
45250-HP1-006 - CALIPER SUB-ASSY. R - $40.31 - 1
44311-HN6-000 - COLLAR, WHEEL SIDE - $3.96 - 2 - $7.92
44313-HN1-000 - COLLAR, WHEEL SIDE - $3.49 - 2 - $6.98
44615-HP1-000 - HUB SUB-ASSY., FR. - $146.21 - 2 - $292.42
90102-KV3-700 - BOLT, FLANGE (8X28) - $1.81 - 4 - $7.24
90105-MBB-000 - BOLT (8X24) (Brake rotor bolts) - $3.11 - 6 - $18.66

Total $545.16

-use 400ex or 450r rotor bolts
-400ex/250r hubs dont work
-250r tie rods can be used but will be adjusted way out
-ball joints all did fine.
i picked up a good condition complet setup used for 250$

[zedicus00]

does anyone make aftermarket front 450R hubs??

[JTRtrx250r]

Killer post Rich!!:macho :cool: and zed!:D

[zedicus00]

yup, you guys ever notice how nuthing out of the 250r part of this forum ever gets stickied or put in the FAQ thing? this is another one of thouse posts that should b there.

[Rich250RRacer]

One other thing I forgot to mention. I run a 88-89 length swing arm with a braided line, and it looks like the line may be a little tight if the chain is adjusted all the way out. I did not try it to see how it would end up, but an 86-87 length line would take care of this problem.

[JTRtrx250r]

Originally posted by zedicus00
yup, you guys ever notice how nuthing out of the 250r part of this forum ever gets stickied or put in the FAQ thing? this is another one of thouse posts that should b there. sure do! Think we need a legit R mod for this forum:D At least it would help w/ the same questions asked everyday...

[Vtr_Racing]

Great thread. Did you guys notice a big difference in braking? Or was it just that the parts were a little cheaper from the 450r than the 250r?

[zedicus00]

450r front brakes are equall too or only slightly better then the 250R brakes. i did the conversion originally for the aluminum spindles and the brakes went along for the ride.

[quadboy38]

i have a crf front brake with 400ex caliper mount on the rear of my R. this setup has worked awesome for me.

[zedicus00]

honestly the 250r caliper itself, front and rear. is one of the best brake setups on a quad, i wouldnt just change out the brakes on my r just to do it, as theres no reason. like the first guy said though cost is a good reason. or like on the front end, newer design pluss less unsprung wieght. the calipers are pretty much the same style and design.

[cisco]

I've done the full conversion on the front I went with the 05 setup it was much cheaper than the R stuff and it work"s killer.Seem"S to handle slightly better inthe turns but I also went +3 a-arms instead of +2 at the same time I did the conversion.

[250R-Dee]

Pappy came through for us! I requested that this thread be stickied because I have had to use it to answer members questions several times!! Good info!!

I wish people wouldn't price gouge soo much on the 250R parts. Once they see people are using NEW 400EX and 450R parts instead of over-prced 250R parts some of the goobers might lower their prices.


Thanks Pappy!!!:chinese:

[rustyATV]

Two questions about this conversion:

First, have you (or anyone) noticed any problems with the rear caliper hitting the silencer when the suspension bottoms out like the stock 250R setup can do?

Second, was a 450R rear master cylinder used, or is there plans to use it?

[Rich250RRacer]

Originally posted by rustyATV
Two questions about this conversion:

First, have you (or anyone) noticed any problems with the rear caliper hitting the silencer when the suspension bottoms out like the stock 250R setup can do?

Second, was a 450R rear master cylinder used, or is there plans to use it?

It just barely scrapes, but it does leave a mark on the silencer. You can try spacing out the silencer just a little bit. I used the 250R master cylinder, but I'm looking to convert that too.

[cincy250R]

this part number is discontinued

43220-HP1-000 caliper stay

[loboboy]

[i]



-use 400ex or 450r rotor bolts
-400ex/250r hubs dont work
-250r tie rods can be used but will be adjusted way out
-ball joints all did fine.
i picked up a good condition complet setup used for 250$ [/B]

I have heard that the 2006 Honda Spindles are the same as the 400EX so I am hoping that my RPM hubs will work with the new 450R spindles(2006).

I run a Lonestar Outlaw Banshee and all of my 250R stuff is getting worn a little.

[peeping TOM]

a little easy upgrade on the front is a brand new nifin master cylinder and lever , got mine for $32 of ebay ..money well spent !!!!!!!

[Meat]

I have heard that the 2006 Honda Spindles are the same as the 400EX

Can anyone confirm this ?? 400ex hubs fitting on 2006 450r spindles.

[QuadRacer041]

Originally posted by Meat
Can anyone confirm this ?? 400ex hubs fitting on 2006 450r spindles.


i think they will fit on but the offset at which the rotors sit is differnt so they wont line up in the calipers. im not 100% sure though.

[QuadRacer041]

[QUOTE]Originally posted by Rich250RRacer
[B]This are pics of my rear brake conversion on one of my 250R's. It was a very easy switch and much cheaper than replacing a stock 250R caliper, if they're still available. I will list the part numbers so anyone who is interested can price it out on Service Honda's site. At Honda retail it would cost about $200, but should be about $150-160 through Service. If you want to use an anti-fade, figure in the cost of a 450R unit. I had one on the quad with the original stock brake set-up, but it will not work with the 450 system. For the time being, I'll run a stock nut, but a 450R anti-fade is on the way. You will need a caliper sub-assembly, caliper stay (plate caliper mounts on), rear disc, disc hub, and rear brake pads. I was going to hold off on this until I purchased an anti-fade, but when I ordered the rear disc, it came with the stock hub. This is the first one I've seen come this way, I've replaced three rear discs on my 450 and none of them came with the hub. The only problem I ran into was the depth at which the 450 brake hub sat in the 250R carrier. Apparently 450 bearings are set deeper into the carrier. This required 2 8mm spacer washers between the caliper stay and the caliper. Be sure to have a micrometer handy to measure the thickness of these washers, since I just used some bulk washers I had in stock. Thickness isn't very critical, just as long as both washers are within a thousandth or two of each other. If your washers are different thicknesses (and I've noticed as much as .020") the pads will wear unevenly. Anything between .055 and .070 will work and this will put the disc in the center of the caliper bracket. I plan on doing the front conversion also. When I do, I will post pics, a parts list and any problems I encountered.

43150-HP1-006 caliper sub-assembly
43220-HP1-000 caliper stay
43251-HP1-003 rear disc with hub
Pads of your choice.

hey rich,
i just ordered the parts needed to do this conversion and dont have the 450 stuff yet but it looks like the 450 caliper stay is a little thicker then the 250r stay. did you have to machine the 450 stay dow any?
again im just going by the way it looks.

[Meat]

Originally posted by QuadRacer041
i think they will fit on but the offset at which the rotors sit is differnt so they wont line up in the calipers. im not 100% sure though.

Could a spacer setup of some kind be made to shim the caliper ? Or grind something ?? Or a better question is.... can the offset rotor issue be engineered (rigged) up with common sense.... in my garage?:D

[QuadRacer041]

Originally posted by Meat
Could a spacer setup of some kind be made to shim the caliper ? Or grind something ?? Or a better question is.... can the offset rotor issue be engineered (rigged) up with common sense.... in my garage?:D


i dont remember if the rotor will be too far in or out. if the caliper moves out it might hit the rim, youd have to get all the parts and see where evrything sits.

[Meat]

Three (dumb) questions for Rich250RRacer....

Are you using a 250r axle ? I know you didnt mention needing a 450r axle, but I just want to be 100% sure, cause I just bought a sweet RPM 250r axle. Im thinkin' there might be an issue with the axle splines not matching up with the disc hub.

Is that a 250r axle nut your using ??

Did ya do the 450r rear master cylinder swap yet ??

[ninis470]

Originally posted by QuadRacer041
i dont remember if the rotor will be too far in or out. if the caliper moves out it might hit the rim, youd have to get all the parts and see where evrything sits.

hey dud can i ask you why you have a lynk of my photo album in your descrption area??? just askin???

[Rich250RRacer]

Originally posted by Meat
Three (dumb) questions for Rich250RRacer....

Are you using a 250r axle ? I know you didnt mention needing a 450r axle, but I just want to be 100% sure, cause I just bought a sweet RPM 250r axle. Im thinkin' there might be an issue with the axle splines not matching up with the disc hub.

Is that a 250r axle nut your using ??

Did ya do the 450r rear master cylinder swap yet ??

It's a 250R axle. Splines are the same, easiest way to tell this is the stock threaded collar and axle locknut for a 450 and a 250 are the same. I didn't use a 450 master cylinder, the 250R M/C works fine.

[QuadRacer041]

Originally posted by ninis470
hey dud can i ask you why you have a lynk of my photo album in your descrption area??? just askin???


cause i like you.....:rolleyes:

[jason86PRP250r]

heres a picture of my rear brake conversion. i used a 2000 yz426 front caliper on the rear with the stock 250r mount that goes on the housing.

it spaced perfect from rite to left and i had to egg out the one hole a 1/8 inch

[ninis470]

Originally posted by QuadRacer041
cause i like you.....:rolleyes:

kewl just thought i'd ask... :)

[ninis470]

Originally posted by QuadRacer041
cause i like you.....:rolleyes:

kewl just thought i'd ask... :)

[Meat]

The only problem I ran into was the depth at which the 450 brake hub sat in the 250R carrier.

How bout using the 450r axle carrier ? Im in the middle of this brake conversion and have most of the parts, but I don't have an axle carrier yet. I was wonderin if 450r carriers are swappable with 250r carrriers ???

[gregw338]

Will the 450r rear brake caliper work with the 250r setup? All I am needing is a new rear brake caliper. Will I need anything else to make this work?

[QuadRacer041]

Originally posted by gregw338
Will the 450r rear brake caliper work with the 250r setup? All I am needing is a new rear brake caliper. Will I need anything else to make this work?




your kidding right??????? isnt that what this whole thread is about? go back and read, if you dont know how to read there is even pictures.....and if you still cant figure it out the parts #'s are even there...o wait you might not be able to read....looks like your screwed!

[brandonpeake]

why aern't the pics still there Id like to see an illustration

If needed id host the pics to keep them up some peeps can check it out, PM me on here
Thanks,
b

[timfo1]

is there only certain years 450r front brake setups that will work or is it certain years?
i want to do this but not sure if it matters which year i buy..

[250r grave yard]

hey i found a video of some one that installed a front 450r conversion for the 250r he explains about the conversion but i dont know how to make a link to it its on youtube 450r Front End Conversion for TRX250R .

[Saul76]

Video Tutorial On How to Convert 450R Brakes over to Your TRX 250R (http://www.youtube.com/watch?v=SeWuU3AG0yU)

[deathman53]

aren't the 04/05 450r spindle/hub much preferred over the later years? Almost every racer uses 04/05 parts. All the 250r brakes are discontinued in the complete assem. You still can get them, if you know where and it isn't cheap. East coast atv sells re-manufactured 250r calipers for a good price, its most all new, except the caliper body and brackets. You can get most of the parts though. Also 06+ 450r spindles aren't the same as 400ex, actually worse. 04/05 spindles are closer to 400ex.

[thedeatons]

Question 1 - So I have a Leager T-Pin front end. I assume I am stuck with 250R front brakes with that setup?

Question 2 - Did anyone ever find out whether we can use the 250R REAR rotor carrier and a set of spacers? Sure would be cheaper than buying another anti-fade assembly.

James

[tritty_wall]

ok I just bought 450R hubs, rotors, calipers, and knuckles used for my front end. Just had a few questions:

1) what are the COLLAR, wheel side Parts shown on Pg. 1?

2) Does the 250R nut fit on the spindles (The very last nut to go on the wheel side) Was just wondering becuase its not listed on the part list?

Thanks, Tristin

[blue66tang]

So I just did the conversion on my rear brakes. I am kinda confused where the spacers were supposed to go? I put it all together and the caliper is centered nearly perfectly over the rotor. So did i miss something. This swap was as easy as it gets. Maybe somebody swapped 450 carrier into my R? What does the R carrier look like compared to the 450?

[troybilt]

I'm doing this rear conversion right now, is a 450r antifade necessary? Due the 450 antifade splines match up on a 250r axle? I'm sorry only read the first couple of posts...

[josborn]

The splines are the same, you will need to make a spacer to go between the edge of the fade and the bearings to get the caliper lined up with the rotor, if you try to use the 250r nut/rotor. Thats why I used the 450r, it only took a washer between the caliper mount plate and the caliper to get the spacing right. Plus I was due to get a new fade.

Also the one (450r) from ACJ on ebay has a a solid steel piece that goes up against the bearing, and where the seal rides. Not sure if thats a stock piece, but its a he!! of a good idea.

[troybilt]

Originally posted by josborn
The splines are the same, you will need to make a spacer to go between the edge of the fade and the bearings to get the caliper lined up with the rotor, if you try to use the 250r nut/rotor. Thats why I used the 450r, it only took a washer between the caliper mount plate and the caliper to get the spacing right. Plus I was due to get a new fade.

Also the one (450r) from ACJ on ebay has a a solid steel piece that goes up against the bearing, and where the seal rides. Not sure if thats a stock piece, but its a he!! of a good idea.

Without reading all these pages is a 450r rear rotor the same as a 250r rotor?

Thanks!
Troy

[josborn]

I dont think they are, the 250r is four bolt, and the 450r is three bolt.

[troybilt]

Originally posted by josborn
I dont think they are, the 250r is four bolt, and the 450r is three bolt.

yea your right now that you mentioned it, I forgot... darn. Thanks!

[deathman53]

no, a 250r rotor fits on a 450r anti-fade. I know this, as I bought a anti-fade from a guy who had a 250r anti-fade on a 05 450r. He got it really cheap and it looked very similar. Everything fit, I think even the caliper and rotor lined up, but the threaded area wasn't long enough to tighten up tot the axle clip. You must be confusing w/ a 86/87 and 88/89 front rotor, one was three bolt and other 4 bolt, I'm sure the 86/87 was 4 bolt.

[josborn]

Nah, I'm pretty sure the trx 250r rotors were 4 bolt.

This is my 250r RPM fade with Galfer wave rotor.

http://i291.photobucket.com/albums/ll283/josborn99/100_2078.jpg

[troybilt]

I just looked up on Service honda cause I couldn't remember, but the 450r has a 3 bolt rotor not 4 like the 250r. My mistake, I thought they were the same for some reason... I was only asking cause there was galfer in the forsale section, but I just bought a new 450r antifade, and need a galfer rotor for it, and couldn't remember if the 250r rotor would work on it... sorry if I confused anyone. Thanks for all the help!!

[josborn]

Troy- Your better off getting Galfer. I can get a deal on either Galfer or Stock, but I got impatient and went with stock because the Galfer was back ordered. The friggin stock rotor was still around $70 at dealer cost. I should have waited.

[54warrior]

Originally posted by jason86PRP250r
heres a picture of my rear brake conversion. i used a 2000 yz426 front caliper on the rear with the stock 250r mount that goes on the housing.

it spaced perfect from rite to left and i had to egg out the one hole a 1/8 inch

has Anyone else done this? Seems like the easiest way if you ask me.

[rhinorick]

I got the parts off ebay 2 do this and my pads only come down a 1/4 inch or so on the rear disk thinking I must have got something wrong or someone may have shipped a wrong part any idea's ?

[ATC]

Bump!

Since my stock caliper is shot, and they want $200 for a rebuilt unit, I figured I'd try out this conversion.

So far, I've ordered (ebay):

'06 450R rear caliper and m/c
'08 450R caliper mount (stay)


I believe the next thing I need is the rotor and hub before I start mocking it up to figure out if any shims are needed.

[ATC]

Apparantly I got the wrong hub...This one is supposed to be from a 2006. What year are you using?


http://i44.photobucket.com/albums/f25/Crazy-ATC/brakes4.jpg

http://i44.photobucket.com/albums/f25/Crazy-ATC/brakes3.jpg

[BULLET99Z28]

I used all 45rr rear components, caliper, caliper plate/stay, rotor and LSR 450r antifade. I used 2 washers betweend the caliper mounting bracket and brake stay. Everything works great. I am using an 89 swingarm, LSR 250r Billet bearing carrier, and LSR 250r rear axle.

[ATC]

Thanks!

I'm using an '89 swinger and axle. I believe I just need the different style hub. I might try to cut this one down to fit first though.

And on second thought, I might just upgrade to the 450R rear swingarm. I disassembled my rear carrier and it is about trashed. The bearings fell out in pieces and there was no sign of any lube in there...

[bradenc19]

I HAVE A BRAND NEW LONESTAR ANTI-FAD AND ROTOR FOR SALE IF YOUR INTERESTED PM ME 04-05