Hope RX4+ SL Caliper Complete - FMF+20 - DOT - Black

The Hope RX4+ SL is the latest evolution of Hope's renowned 4-piston road and gravel brake caliper, combining exceptional stopping power, outstanding modulation and improved frame compatibility. Precision CNC machined from a single piece of 2014 T6 aluminium, the monobloc construction delivers increased stiffness for enhanced lever feel, reduced pad rub and consistent braking performance in all riding conditions.

Designed specifically for DOT fluid brake systems, the RX4+ SL is the ideal performance upgrade for SRAM hydraulic road and gravel groupsets. The four-piston design provides significantly greater braking power and control than traditional two-piston calipers, offering increased confidence on steep descents, technical gravel routes and heavily loaded adventure bikes.

The RX4+ SL features Hope's latest slimline caliper design, reducing the overall width of the caliper to improve clearance around modern road and gravel frames and forks. A redesigned bore cap arrangement also improves bleeding and servicing access while maintaining the proven performance and reliability that has made the RX4+ one of the most popular hydraulic road brake upgrades available.

This FMF+20 (Flat Mount Front +20) version is specifically designed for front Flat Mount installations requiring a 20mm rotor size increase, making it ideal for use with larger front rotors where additional braking power and heat management are required.

Features:
- Flat Mount Front +20 fitment
- Compatible with DOT 4 and DOT 5.1 brake fluid systems
- Lightweight 4-piston monobloc caliper construction
- CNC machined from 2014 T6 aluminium
- Improved frame and fork clearance with slimmer SL design
- Increased braking power and modulation
- Top-entry pad fitting for easy maintenance
- Available in Hope anodised colour options
- Manufactured in Barnoldswick, UK

Compatible with:
- SRAM Red eTap AXS
- SRAM Red HRD
- SRAM Force eTap AXS
- SRAM Force HRD
- SRAM Rival eTap AXS
- SRAM Rival HRD
- SRAM Apex AXS and Apex HRD
- SRAM S900 hydraulic systems

Suitable for use with DOT 4 or DOT 5.1 brake fluid only. Not compatible with mineral oil brake systems. Rotor compatibility depends on frame and fork specifications and mounting configuration.