Shimano GRX ST-RX610 Shift/Brake Lever BR-RX400 Hyd Disc Brake Caliper - Right/Rear 12-Spd Flat Mnt Caliper For 25mm Mount BLK Hi & Low Speed comp adj Fixed position (Torque Lock) for

Fixed position (Torque Lock) for unlimited tightening and loosening moments

With a simple lever-actuated system and durable construction it’s an ideal upgrade for your bike

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Shimano GRX ST-RX610 Shift/Brake Lever BR-RX400 Hyd Disc Brake Caliper - Right/Rear 12-Spd Flat Mnt Caliper For 25mm Mount BLK Hi & Low Speed comp adj Fixed position (Torque Lock) forShimano GRX ST RX610 Shift Brake Lever with BR RX400 Hyd Disc Brake Caliper Right Rear 12 Spd Flat Mnt Caliper For 25mm Mount Black. The Shimano GRX ST RX610 dual control lever delivers light and responsive shifting for mixed terrain riding (Note: BR1057 is a left non shift variation for 1x set ups) . The textured hood and anti slip brake lever surface increase control on bumpy terrain. The GRX BR RX400 2 piston flat mount hydraulic disc brake caliper