Master cylinder interchange, 85-86 250R

[Billy Golightly]

Any of you guys have any experience with anything that is a direct (Or very close) Swap over for these?

[Cave Rider]

I have used the 350x before and it appeared to be identical..the 200x will work but you will have a spongy lever due to the fact the plunger inside is smaller because the caliper is only 1 piston. However,any of the 4wheeler master cylinders will work,they do have a larger resevoir and plunger because it operates dual calipers or drum cylinders. The plus side is that your brakes will work exceptionally because of the volume of fluid it can displace...Good luck,hope i helped

[Mosh]

You are referring to the rear correct?
http://www.3wheelerworld.com/showthread.php?43949-200x-and-250r-rear-brakes&highlight=master+cylinder

Like I said talk to Rick. I think he just had to tap the holes for threads with a 200x.

are you missing one? or what is wrong with it?

[Cave Rider]

Just so everyone is clear...I referred to the fronts,sorry if you intended to discuss the rear.

[oldskool83]

id think u can use anything, ive swaped out all kinda on my 200x's, cr85's cr250s, 300exs, yzf450's. i got a spare trx 250x one if ya in need of somthing.

[Billy Golightly]

Yeah I should have specified the rear, sorry. I've got a couple that need rebuilt and I can get kits for them but I was kind of just looking for a newer replacement mostly. I'm sure all my 200x ones are in about the same shape :lol:

[oldskool83]

when i had my 85 250r i had a spare 300ex rear and it was not off by much. when i had my 200x's i ran yfz450r's you egg the holes out and fit right on.

i just put on my blaster.

[Billy Golightly]

I've tried using a Cannondale and also a CR125 one, but the stroke lengths and the shafts are too short to make the pedal not setup real high. Of course I can make an extension but I'm just trying to find as close to a bolt on replacement as possible.

[Mosh]

OK I knew there was a newer unit that worked. I thought Brandon found it and posted it but my memory is cloudy. I have been searching for his post but found this one.
Gonna try some different search words and find Brandon's post too if there is one.
Z 400 fits.

http://www.3wheelerworld.com/showthread.php?93147-86-250R-rear-master-cylinder&highlight=250r+master+cylinder+brakes

Another z400 thread.
http://www.3wheelerworld.com/showthread.php?86988-85-250r-master-cylinder&highlight=z400