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'03 GSXR1000 Front Brake Master Cylinder

2.8K views 7 replies 6 participants last post by  KD5qoq  
#1 ·
I've read that an 01-02 is a direct swap, any idea whether an '03 would work. I've checked part numbers on bike bandit, but I'm not sure if those are right.
 
#2 ·
ideally.... you can put any master cylinder on any set of brakes.... you can change around the m/c piston size for a different feel and different force. i'm not exactly sure about those exact two being compatible, but id say go for it.

smaller m/c piston = more lever travel, more feel
bigger m/c piston = less lever travel, less feel
 
#7 · (Edited)
To expand on that ;-), the bigger the bore, the less pressure there will be for a given lever force. Conversely, a smaller bore will produce a higher pressure from the same amount of force. A bigger bore needs less stroke to move a given volume of fluid, while a smaller bore needs more stroke to move the same amount of fluid.

So, the bigger the bore, less stroke but more force will be needed to reach operational pressure. While, the smaller bore will need more stroke but less force to reach the same pressure.

The average riders' perception of 'brake feel' is a compromise between those characteristics.
 
#8 ·
Not sure what the mounting arrangement is on the gsxr, but you would need to cut two parallel, rectangular slots as the SV lights are mounted in from the back side and protrude through the surface of the tail.