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RX4+ Postmount
RX4+ Front Flat Mount Direct FMF +20mm 
RX4+ Rear Flat Mount Direct FM +20mm  
RX4+ Flat Mount: FM

RRP £110.00 // €125.00 // $140.00 (ex tax)
The RX4+ caliper supersedes the RX4 caliper and 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.

Key Features

// Dot Fluid Calipers will have Bore Caps with a D etched.
// Mineral Oil Caliper will have Bore Caps with an M etched.
// Calipers to suit dropbar set ups - Flat Mount front & rear & Post Mount
// Calipers designed to fit 140, 160 & 180mm rotors 
// Slimline 4 piston lightweight design
// Monobloc design creates a stiffer caliper reducing the fuzzy lever feel and brake pad rub
// Available in Black, Silver, Bronze, 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
RX4+ Caliper is designed to work with Shimano and Campagnolo dropbar brake systems
(Mineral Oil, Shimano recommended for Shimano application, Campagnolo/Magura recommended for Campagnolo)

Shimano Compatible Calipers (RX4+)
Dura Ace Di2 R9270 / R9170 / R9120 / R9200
Ultegra Di2 R8170 / R8100 / R8070 / R8170 / R8020 /
105 Di2 R7170 / R7020 / Di2 R785 / RS685 /
GRX RX820 / RX810 / RX600 / RX400 / RX815 Di2 / RX817 Di2

Campagnolo Compatible Calipers (RX4+)
Ekar / Super Record / Record / Campagnolo H11
SRAM Compatible Calipers (RX4+) dropbar brake systems (Dot Fluid)
Sram Red eTap AXS / Sram Red / Sram Force eTap AXS / Sram Force / Sram Rival eTap AXS /
Sram Rival / Sram Apex / Sram S900


"it's safe to say I've spent a considerable amount of time assessing the Hope Rx4+ system. With the benefit of time, this is why there's nothing I recommend more often than a brake system upgrade. "
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