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"

and the high-flow 4-piston caliper

Diameter 29in Front/Rear or Set Front ID Width (mm) 30 Axle Size Thru 15mm Rim Color Blk Rim Model E-Deemax Hub Model Mavic Infinity Hub Spacing 110 Hub Color Blk Gears Brake Type 6B Spoke Type Mavic Aero SP Spoke Count 28H Wall Dbl Valve Type PV

Stainless steel cage includes a 21oz smoky gray bottle with black big mouth lid

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