Raptor 660 Brake Problems

ZeroTolerance

Member
Apr 23, 2013
36
1
35
Katy , TX
I have a 2003 Yamaha raptor 660, and i rebuilt the master cylinder and rear caliper, but after each hard ride, i need to bleed the rear brakesbecause they loose pressure, I have read about the recall on the raptor660. So i called Yamaha and how I bought the bike used i didnt know if the previous owner took it to the dealer, which they did and had the recall so called fixed. I still think it is the vibration in the reservoir.
 
Yea, Each time. I think it is the vibration, or that it eats up the cheap pads and there is low fluid so air gets in the system. Im uprading pads now and going to put some grommets on the mounts and minimize the vibration.
 
Yea, i replaced all the seals. and if i ride normal not hard on it it will be fine but once i go over bumps and jumps and hard riding lots of bouncing around then it gets loose then i have to back off and then it will last a little longer before it craps out.