Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port CheckoutTitle=Muc-Off V2 Tubeless Valve Kit - Turquoise Grab any kind of smooth

Grab any kind of smooth and sensitive surface

Butted aluminum with bead-blasted finish for increased durability

Thumb overlay panel for durability and aids in reducing blisters

8Clamp Style Standard RailsOffset (mm) 0Color BlackMin Height 164

Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port CheckoutTitle=Muc-Off V2 Tubeless Valve Kit - Turquoise Grab any kind of smoothShimano SM JC41 Di2 Internal Frame Junction Box 4 Port. 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