Shimano GRX BR-RX400 Flat-Mount Disc Brake Caliper Resin Pads Fins adaptor sold seperately

Shimano GRX BR-RX400 Flat-Mount Disc Brake Caliper Resin Pads with Fins adaptor sold seperately. GRX BR-RX400 Disc Brake Caliper

Shimanos ICE technology provides excellent heat dissipation

Caliper is designed to shed mud

An easy hose joint system (J-kit) means convenient tool access

Simple wheel replacement

One Way Bleeding technology offers an easy and clean bleeding system