Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=E3837

Shimano SM-JC40 Di2 External Frame Junction Box 4-Port ModelNumber=E3837Shimano SM JC40 Di2 External Frame Junction Box 4 Port. Shimano 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

Quantity Included 1 Length 2050 Cable Head Type Shimano/SRAM Road Diameter 1

The stopping power comes from the Diecast alloy 990 rear brake

improves deflection and reduces hang-up during rock strikes

It has enough range to power you up steep hills and keep you pedaling smoothly on flats

Color Black Ring Position/Type Outer Tooth Count 34 Drivetrain Speeds 11 Chainring BCD 96 Shimano Asymmetric Material Aluminum Defined Color Black

these tires provide the traction needed to feel steady and in control on different surfaces

When you need to slow down fast

FSA (Full Speed Ahead) MegaExo 19 bottom brackets are for use with 19mm diameter spindles

Similar to standard BSA threaded cups

Length 591

11 pins per side and 7 of which can be flipped to fit short- or long-way to fine tune the amount of grip desired

Frame Mount Width 44 Bolt Mount Diameter 8