Shimano EW-JC302 Di2 Junction Box - 2 Ports Use With EW-SD300 Model=Hawk V2 BMX Crank 5" 15 x 100mm 6-Bolt

5" 15 x 100mm 6-Bolt Black

Noise management system for near silent performance

Hydrophilic rubber inserts and adjustable nose piece keeps the frame firmly in place

5" rims Whisky 50w or 80w

8 Clamp Style Bottom Bracket Stand Style Folding

Shimano EW-JC302 Di2 Junction Box - 2 Ports Use With EW-SD300 Model=Hawk V2 BMX Crank 5" 15 x 100mm 6-BoltShimano EW JC302 Di2 Junction Box 2 Ports Use With EW SD300. Shimano Di2 Frame Junction BoxFrame Junction Box connects via SD50 E tube wires to four different points: front derailleur rear derailleur cockpit junction box and battery mount 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