Brake Master Cylinder Rebuild Kits

Are the master cylinder rebuild kits interchangable between the front and back? If not, where can you get one for the rear? I have a '77 KZ650C1. Thanks

The kits are generally not interchangeable between front and rear. I've been watching the auction sites for a rear kit for my 81 GPz too and have not seen one yet. I haven't tried a "dealer" yet 'cause I'm not desperate...yet.
Pretty much, just my rear rubber boot is deteriorated, so function is not affected.

Try Z1 Enterprises. Jeff knows what will fit what. His prices are good too.
www.z1enterprises.com