Dura Ace / Ultegra DI2 Ew-jc130-sm Junction B Cable Category_Chains All Ceramic Speed products sold

All Ceramic Speed products sold through Cobbled Climbs are 100% genuine and authorised

a single cartridge may not fully seat a stubborn tubeless tyre

Most Indian road and gravel bikes use Presta

Indian roads — from Leh's mountain tracks to Chennai's coastal stretches — demand a cage that grips with confidence

The Birzman Phone Pouch is designed for handlebar or top-tube mounting — verify your bar diameter and available mounting real estate before ordering

Dura Ace / Ultegra DI2 Ew-jc130-sm Junction B Cable Category_Chains All Ceramic Speed products soldThe 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.