Hope RX4+ SL Caliper Complete - FM Std - MIN - Blue

The Hope RX4+ SL is Hope's latest-generation 4-piston road and gravel brake caliper, developed to deliver 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 a firmer lever feel, reduced pad rub and consistent braking performance in all conditions. Designed specifically for mineral oil brake systems, the RX4+ SL is the perfect upgrade for Shimano and Campagnolo hydraulic road and gravel groupsets.

The slimline 4-piston design combines powerful braking performance with excellent control, making it ideal for road, gravel, cyclocross and adventure riding. Differential piston sizing improves modulation and pad engagement, while the lightweight monobloc construction maximises stiffness and braking efficiency.

For 2026, Hope has refined the original RX4+ design to create the RX4+ SL. A redesigned bore cap arrangement reduces the overall width of the caliper, improving clearance on frames and forks where space is limited. The updated design also improves serviceability and bleeding access while retaining the proven braking performance that made the RX4+ a popular upgrade choice.

Features:
- Flat Mount standard 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
- Top-entry pad fitting for easy maintenance
- Available in Hope anodised colour options
- Manufactured in Barnoldswick, UK

Compatible with:
- Shimano Dura-Ace R9270, R9200, R9170, R9120
- Shimano Ultegra R8170, R8100, R8070, R8020
- Shimano 105 Di2 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 H11

For Shimano systems, Shimano Mineral Oil is recommended. For Campagnolo systems, Campagnolo or Magura mineral oil is recommended. Mount adapter not supplied. Rotor compatibility depends on frame and fork mount configuration.