Dura Ace / Ultegra DI2 Ew-jc130-sm Junction B Cable Category_Chains please contact the Cobbled Climbs

please contact the Cobbled Climbs team directly — we support all brands we stock and can connect you with CeramicSpeed's official warranty process

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

a single cartridge may not fully seat a stubborn tubeless tyre

MTBs commonly use Schrader

Dura Ace / Ultegra DI2 Ew-jc130-sm Junction B Cable Category_Chains please contact the Cobbled ClimbsThe 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.