Shimano SM-JC40 Di2 External Frame Junction Box 4-Port Product Type_Mountain Bikes tire size 700c tire width

tire size 700c tire width 20-28mm valve Presta (threaded) length 80mm

Color Black/Gold Number of Chainrings No Rings Included Crank Length (mm) 170 Crank Intended Use Mountain Drivetrain Speeds 12 BB Included No Pedal Spindle 9/16" Chainline/Hub Compatibility 135/142 MTB Hubs Chainline/Hub Compatibility 141/148 Boost Hubs Defined Color Black Defined Color Gold

Lightweight and durable racing tubes

}Topeak MTX Rear Basket: Black

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port Product Type_Mountain Bikes tire size 700c tire widthShimano SM JC40 Di2 External 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