[mapleridge]

Originally Posted by The HACK

No. Most of the time it's done to maintain brake bias. A typical front only kit with larger diameter rotors will generate significantly more brake torque due to moving the leverage out further, thus shifting brake bias unnecessarily forward to the front axle. In order to alleviate the problem, a well engineered front only kit SHOULD include slightly smaller piston area to restore proper brake bias.

A side benefit to said smaller piston area is increased stiffness of the pedal. But it doesn't necessarily generate more brake pressure because the increased pressure is spread out over a larger pad/friction surface (most fixed calipers use a larger brake pad surface area).

Thanks for the input.