After owning my 91 FXRS for almost a year I'm finally ready to rebuilt the bike. I need some advise concerning what I should use for the rear brake. I want to go with a 4 piston caliber. The guy I'm working with who's going to redo the engine and transmission is telling me that Performance Machine's 4 piston brake does not do a good job, he told me that with the rear brake engaged he can easily move the bike forward. Anyway I'm looking for any advise concerning this. The biggest issue seems to be the brake bracket, or lack there of...

 

He is not and engineer and obvious you are not. Rebuild it stock. It will stop. OEM front and back will slide that small area that a bike has on the ground. Nothing wrong with Performance Machine's 4 pistons. You just don't need it unless you do front and back engineered for balance.

 

I would have to agree with the "Rip." My former bike, a '90 FXR, could easily lock up the rear wheel with the stock caliper. IMO, not at all necessary to switch over all the hydraulics to improve performance, only if you just want to change the looks.




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Looks Good "O"...is that chin spoiler Aluminum? I think I have an unpainted version of that

 

The rebuild will be a frame up restoration including upgrading the bike to run Harley's dual 4 piston caliper fronts, rebuilding the motor with a 89 stroker, screaming eagle heads, mikumi 42mm carb, electronic speedo and tach, etc. The bike will be equipped with Harley floating rotors front and rear so basically the bike will NOT be stock when I'm done. I'm using as much Harley stuff as I can. If you think that it's still good to run the stock rear brake, then so be it... That's why I'm asking for advice here...

 

Base your decision on what YOU want to do. Leave it...change it...either should be acceptable, but DO NOT base it on the statement:

"...he told me that with the rear brake engaged he can easily move the bike forward."

Hope that helps