SHIMANO GRX ST-RX610 2-SPEED STI DUAL CONTROL LEFT trek kids XT BR-M8120 and SLX BR-M7120

XT BR-M8120 and SLX BR-M7120 4-piston disc brake has a better wear resistance than previous models

Quick mount design

0 racks with attachable side frames

Separate direct mounts also available for Shimano I Spec 2 & Sram shifters

SHIMANO GRX ST-RX610 2-SPEED STI DUAL CONTROL LEFT trek kids XT BR-M8120 and SLX BR-M7120The Shimano GRX ST RX610 2 speed STI delivers the braking power gravel riders demand. Engineered for hydraulic disc brakes, this dual control lever provides exceptional deceleration performance when you need it mostwhether tackling steep descents, technical terrain, or unexpected obstacles. The 2 speed design offers versatile gear management alongside reliable stopping power, giving you confidence and control across any gravel adventure. Built for