Description
The Shimano Di2 Junction B box is the center of the e-tube Di2 system
Holds up to 7 gels and a cell phone
BIKEPRO is the secret weapon in your shoe
Advanced training shorts made of woven stretch fabric designed for most kinds of intense physical activities
Shimano ST RX600 BR RX400 GRX Shift Brake Lever Disc Caliper Type:Rear The Shimano Di2 Junction B Length:38cm W 1 BR 0044 GN030 L Soybean Free Factory Traces Parts Drivetrain & Brakes Brakes Calipers The Shimano Di2 Junction B box is the center of the e tube Di2 system Holds up to 7 gels and a cell phone