KZR's Bikes of the Month for 2024

79 KZ650C Rear Master Cylinder

More
13 Apr 2021 13:40 #846642 by Stefk88
79 KZ650C Rear Master Cylinder was created by Stefk88
Hey everybody,
My KZ650C rear master cylinder is leaking. I had it bored and sleeved but I cannot find a piston or a cup that goes on the piston to get it to stop leaking. At this point I'd buy an aftermarket master cylinder, but they're all made in China and the reviews say they suck. Any suggestions?

Please Log in or Create an account to join the conversation.

  • Scirocco
  • Offline
  • Premium Member
  • Never change a running system
More
13 Apr 2021 16:24 #846647 by Scirocco
Replied by Scirocco on topic 79 KZ650C Rear Master Cylinder
Some pics of your the rear MC would help to get a replacement MC.

Please Log in or Create an account to join the conversation.

More
13 Apr 2021 17:48 - 13 Apr 2021 17:50 #846650 by rstnick
Replied by rstnick on topic 79 KZ650C Rear Master Cylinder
This thread may be of some help:

KZ650C Rear Master Cylinder Rebuild Parts - KZRider Forum - KZRider, KZ, Z1 & Z Motorcycle Enthusiast's Forum

after you advised of this i went and bought one, it is the right diameter but length is shorter i dont know if this is a problem or not. i also picked up a 14mm front master cylinder for cheap and the seal is as far as i can tell the same size, the pic shows the 14mm front kawasaki seal on the left, the original seal on the piston (which to me looks in good nick) and the CBX on the right, as you see the CBX is shorter. I have cleaned the piston up more since the photo and it now looks fine, so i hope when i finally come to refit one of seals does the job, or even better they all will work.


Rob
CANADA

Need a key for your Kawasaki? PM me

1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, ZRX shocks, 18" Z1R front wheel.
2000 ZRX1100
2011 Ninja 250R - Wife's
2005 z750s (aka GPz750)
1978 KZ1000 project
Last edit: 13 Apr 2021 17:50 by rstnick.

Please Log in or Create an account to join the conversation.

More
14 Apr 2021 02:58 #846660 by Mc Tavish
Replied by Mc Tavish on topic 79 KZ650C Rear Master Cylinder
Nice of the company you used to bore and sleeve the M/C to dimensions that parts are no longer available!

1978 z650C

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum

If you like KZR Please consider making a donation. Thank you.

KZRider is free, but not without cost.

Please consider chipping in a few bucks to help cover the cost of running the KZR servers.