Hope RX4+ Disc Brake Caliper - Rear Flat Mount Direct +20mm Mineral Oil Type Purple Description-Strap-On Cage Mount The External Battery eX1 is

The External Battery eX1 is the only additional battery compatible with all eBikes equipped with the XS X20 and X30 Systems

The CO2 FuelPack fixes flats and inflates in a flash

Pawl and spring service kit for Ritchey rear hubs

Model 12 Deg Elastomer Kit

Hope RX4+ Disc Brake Caliper - Rear Flat Mount Direct +20mm Mineral Oil Type Purple Description-Strap-On Cage Mount The External Battery eX1 isThe 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