RX4+ Postmount Caliper – designed for use with Postmount type fork and frames. For use with MINERAL Oil systems only (Shimano and Campag - not SRAM!)

• Postmount Caliper
• Drop bar hydraulic calipers
• Slimline 4 piston lightweight design
• Monobloc design creates a stiffer caliper reducing the fuzzy lever feel and brake pad rub
• Available in 6 different colours
• MINERAL Oil Brake Fluid Only

Compatible Shimano 

Dura Ace Di2 R9170                                   
Dura Ace R9120
Ultegra Di2 R8070
Ultegra R8020
105 R7020
Di2 R785
RS685                                                                               
GRX RX810                                                                      
GRX RX600
GRX RX400
GRX RX815 Di2
GRX RX817 Di2

Campagnolo Compatible Calipers 
Super Record
Record
Campagnolo H11