Dura Ace / Ultegra DI2 Ew-jc130-sm Junction B Cable Category_Chains and the grit thrown up

and the grit thrown up on Western Ghats climbs — is not optional

the functional benefit justifies the price

or tackling a wet Coorg descent — puts chains through serious punishment

high-humidity rides in Coorg

Complete your 795 Blade Rs setup with carbon-compatible race pedals matched to your cleat system

Dura Ace / Ultegra DI2 Ew-jc130-sm Junction B Cable Category_Chains and the grit thrown upThe Shimano Dura Ace Ultegra Di2 EW JC130 SM Junction B Cable is a purpose built electronic component that keeps your Di2 drivetrain communicating accurately. For Indian riders running 12 speed electronic groupsets across the Western Ghats, Nilgiris, or Aravalli climbs, reliable wiring is the quiet backbone of every clean shift. Use Cases Daily training. Reliable use across Indian training conditions heat, humidity, and rough tarmac. Race day.