Caliper pistons

HOPE brakes should also be selected according to the number of pistons contained in the brake caliper. More caliper pistons give more braking power due to the larger frictional area of the pads. The caliper is generally larger and can thus dissipate heat better, generating less power loss. They are thus designed for the most demanding applications, such as e-bike, downhill or enduro. 2-piston brakes, on the other hand, are lighter and offer excellent braking power delivery compared to the inferior modulation of 4-piston brakes. They are also much cheaper and are waterproof for light trail, XC - Cross-Country, or kids and city bikes.