Hope RX4+ Disc Brake Caliper - Front Flat Mount Direct +20mm Mineral Oil Type Purple cat bikes road BSA square taper FRONT HUB:

BSA square taper FRONT HUB: RADIO RACELINE "COBALT"

Sintered pads have copper plated back plates

and the high-flow 4-piston caliper

Lighter operating force and wider compatibility with internal cable routed frames

Hope RX4+ Disc Brake Caliper - Front Flat Mount Direct +20mm Mineral Oil Type Purple cat bikes road BSA square taper FRONT HUB:The Hope RX4+ mineral oil type caliper builds on 25 years of experience designing and manufacturing hydraulic disc brakes and transfers that knowledge into the world of road and cyclocross drop bar brakes. A precision CNC machined monobloc design results in a stiffer caliper to give unrivaled feel and modulation. CNC machined monobloc design creates a stiffer caliper reducing the fuzzy lever feel and brake pad rub Slimline 4 piston lightweight design