Shimano BMDN100 Di2 Long Battery Mount for External Wiring Weight-600 2-pc caliper features a forged

2-pc caliper features a forged aluminum body and (4) phenolic pistons that have excellent insulator properties

Whatever the weather

Designed with a wider braking surface to make them more compatible with other brakes

Painted bead-blasted black finish provides an attractive look and adds a durable layer of protection

Mostro Enduro Race Size 27

Shimano BMDN100 Di2 Long Battery Mount for External Wiring Weight-600 2-pc caliper features a forgedShimano BMDN100 Di2 Long Battery Mount for External Wiring. Shimano Di2 External Battery MountsAll Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com