RX4 Postmount Caliper

The RX4 caliper builds on 25 years? experience designing and manufacturing hydraulic disc brakes and transfers the knowledge and skills acquired into the world of Road and Cyclocross dropbar brakes. A precision CNC machined monobloc design results in a stiffer caliper to give unrivalled feel and modulation. Choose from Shimano or Sram depending on your lever.



RX4-SH Caliper – Designed to work with Shimano and Campagnolo dropbar brake systems
(Mineral Oil, Shimano recommended for Shimano application, Campagnolo/Magura recommended for Campagnolo)

Dura Ace Di2 R9170 Super Record
Dura Ace R9120 Record
Ultegra Di2 R8070 Campagnolo H11
Ultegra R8020
105 R7020 Not currently compatible:
Di2 R785 GRX RX815 Di2
RS685 GRX RX817 Di2

RX4-SR – Designed to work with Sram dropbar brake systems (Dot Fluid)

Sram Red eTap AXS
Sram Red
Sram Force eTap AXS
Sram Rival
Sram Apex

Weights from:
RX4 SH – 102g Inc pads.
RX4 SR – 92g Inc pads.

**Note – Not suitable for IS mounts