UD Carbon Headset Spacer Set, Includes 5mm x 2, 10mm x 1, 15mm x 1 shift cables & housing The GRX BR-RX400 2-piston flat

The GRX BR-RX400 2-piston flat mount hydraulic disc brake caliper features a low-profile design with ICE technologies to provide greater control and excellent heat dissapation for mixed terrain riding

With much lower weight

Excellent ventilation with 5 air inlets and 8 air outlets

2 pockets to store your essentials

MASTERMIND TCU: The MasterMind Turbo Control Unit (TCU) is our class-leading solution that allows you to control how you

UD Carbon Headset Spacer Set, Includes 5mm x 2, 10mm x 1, 15mm x 1 shift cables & housing The GRX BR-RX400 2-piston flatRockShox Carbon Headset Spacers Includes 5mm (x2), 10mm, and 15mm spacers UD carbon fiber finish