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RX4+SL

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

RRP £115.00 // €144.50 // $150.44 (ex tax)

For 2026, the RX4+ has been refreshed as the RX4+ SL, featuring a new bore cap that adopts the narrower design first introduced on the GR4 and TR4 to reduce overall caliper width and improve compatibility with a wider range of frames. It also incorporates the bleed nipple design from the RX2, making bleeding simpler and cleaner. Together, these focused updates make the RX4+ SL more user-friendly while maintaining the powerful, reliable performance riders expect.

Key Features

// DOT and Mineral oil compatible versions
// New bleed nipple design for easier/cleaner bleeding
// Flat Mount, Post Mount & Flatmount Front +20mm and Flatmount +20mm
// New bore cap design decreases overall width of the caliper for better frame compatibility
// 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, Smoke, Blue, Red, Purple & Orange
// Top entry pad fitting
// CNC machined from 2014 T6 aluminium
// Compatible with our Flat Mount X, Y and Z brackets
// Specific bleed syringe available separately Ø

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

REVIEWS

"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. "
CYCLINGNEWS

Manuals and Diagrams

// Instructions DOT
// Instructions MINERAL

// RX4+SL Exploded View
// Flat Mount Fitment Chart
// Brake Mount Chart
// Brake Mount Identification Chart
// Brake Tech Book

RX4+SL

RX4+SL Front Flat Mount Direct FMF +20mm RX4+SL Rear Flat Mount Direct FM +20mm RX4+SL Flat Mount: FM RRP £115.00 // €144.50 // $150.44 (ex tax)