RX4 Postmount

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.

Key Features

  • Post mount front and rear hydraulic caliper to suit dropbar set ups
  • Shimano or Sram specific caliper
  • Slimline 4 piston lightweight design
  • Monobloc design creates a stiffer caliper reducing the fuzzy lever feel and brake pad rub
  • Available in Black, Silver, Red, Blue, Purple and Orange
  • Top entry pad fitting
  • CNC machined from 2014 T6 aluminium
  • ***Please note***Shimano and SRAM brands belong to a third party and have no relation with Hope Technology’
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"Built for adventure"
RX4 Postmount Tech Specs >
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
Di2 R785

RX4-SR - Designed to work with Sram dropbar brake systems (Dot Fluid)
Sram Red eTap
Sram Red
Sram Force
Sram Rival
Sram Apex

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

**Note - Not suitable for IS mounts