NEW Shimano EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300 fork-type_not-included Pawls and springs not included

Pawls and springs not included

SRAM Hydraulic Line Kit - For S4 Calipers/Guide Ultimate/Guide RSC(B1)/Guide RS(B1)/Guide R(B1)/Guide T(A1)/G2

5 mm bottom bracket

Type: Rear

Weight: 284

NEW Shimano EW-JC304 Di2 Junction Box - 4 Ports, Use With EW-SD300 fork-type_not-included Pawls and springs not includedShimano Di2 Frame Junction Box Frame 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 tubeproject. shimano. com