Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300 MFPN=WPR1400AAQXKA07121 With its smooth octagonal shape

With its smooth octagonal shape DNA rubber compound and small flanges the Original grip is comfortable during all-day epic rides

Compound Organic Heat Sink No Backing Plate Material Steel Pad Shape Number 41

Precision bored fully concentric bearing seats for a smoother spin and prolonged bearing life

5 Frame Compatibility Giant Trance 2017-2021 Spring Adjustments Air pressure Bottomless tokens Spring Type DebonAir Linear

Misc Bearing 67

Shimano EW-JC304 Di2 Junction Box - 4 Ports Use With EW-SD300 MFPN=WPR1400AAQXKA07121 With its smooth octagonal shapeShimano EW JC304 Di2 Junction Box 4 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