Di2 Cockpit Junction Box 5-Port 10 Speed and commuter tires with 3M

and commuter tires with 3M reflective sidewalls to provide additional visibility and safety at night

Compound: Semi-Metallic

with dependable construction to last through lots of rough and tumble and hand-me-downs

Adapts SRAM/Truvativ GXP cranks to work with 386 EVO bottom brackets

Di2 Cockpit Junction Box 5-Port 10 Speed and commuter tires with 3MShimano Di2 Junction Box All 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 SM EW90 B 5 Port Cockpit Junction Box connects up to 2 pairs of Di2 shifters to the frame junction box via 5 SD50 E tube wires OEM front wiring kit for Dura Ace Di2 9070 LED battery charge