400ex rear master cylinder on a 250r

[trey]

Will a 400ex rear master cylinder bolt on to a 250r frame? My 250r cylinder is beyond rebuildable (aluminum cracked, and major corrosion)

thanks

[toby400ex]

Ive heard of people using a 250r caliper on a 400ex, but im not sure about the other way around. I think you need an expensive adaptor. Just look on ebay for a used caliper

[trey]

i dont need the caliper i just need a new master cylinder

[RiPPiNiTuP7]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=43972&item=2417066686

[trey]

thanks ive been watching that auction. i was wondering if a 400ex cylinder would work because they are cheaper and brand new.

[TRXR29]

You <i>can</i> make one fit, but it will not just bolt on. I used a 400EX brake pedal and master cylinder both, just to make it tuck in closer to the frame. I had to change a mount on the frame and modify the brake pedal. Also, the 250R reservoir uses a different size hose than the EX master cylinder. It took some rigging, but I made it work pretty well. I'll try to get a pic soon if you want. For most people, though, it's easier to just buy a 250R master cylinder.

[trey]

thanks for the offer------ i believe i found a 250r cylinder