Hope RX4+ SL Caliper Complete - FMF+20 - MIN - Red

The Hope RX4+ SL is the latest evolution of Hope's highly regarded 4-piston road and gravel brake caliper, delivering exceptional stopping power, precise modulation and improved frame compatibility. CNC machined from a single piece of 2014 T6 aluminium, the monobloc construction creates a stiffer caliper body for enhanced lever feel, reduced pad rub and consistent braking performance across all riding conditions.

Designed specifically for mineral oil brake systems, the RX4+ SL is an ideal upgrade for Shimano and Campagnolo hydraulic road and gravel groupsets. Its four-piston design provides significantly greater braking power and control than conventional two-piston calipers, making it particularly well suited to gravel riding, bikepacking, endurance road riding and demanding mountain descents.

The RX4+ SL introduces 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 braking performance and reliability that made the original RX4+ a popular upgrade choice.

This FMF+20 (Flat Mount Front +20) version is designed specifically for front Flat Mount installations requiring a 20mm larger rotor size, providing increased braking power and improved heat management for more demanding riding applications.

Features:
- Flat Mount Front +20 fitment
- Compatible with mineral oil brake 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 excellent modulation
- Top-entry pad fitting for simplified maintenance
- Available in Hope anodised colour options
- Manufactured in Barnoldswick, UK

Compatible with:
- Shimano Dura-Ace R9270, R9200, R9170 and R9120
- Shimano Ultegra R8170, R8100, R8070 and R8020
- Shimano 105 R7170 and R7020
- Shimano GRX RX820, RX810, RX815 Di2, RX817 Di2, RX600 and RX400
- Shimano RS685 and Di2 R785
- Campagnolo Ekar
- Campagnolo Super Record
- Campagnolo Record
- Campagnolo Chorus H11

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