5800-gs 105 Pulley Set ESD-SURF Designed for Shimano Ultegra R8000-series

Designed for Shimano Ultegra R8000-series hydraulic disc calipers

Complete your Di2 setup with Di2 E-tube junction wires

so there is no fit concern here

this jersey is not waterproof — layer a rain jacket over it when riding in heavy downpours

For cassette work

5800-gs 105 Pulley Set ESD-SURF Designed for Shimano Ultegra R8000-seriesDerailleur pulleys are small components that take a disproportionate beating on Indian roads. Dust, monsoon grime, and the sustained heat of a Pune or Chennai summer all accelerate wear on these hardworking guides. The Shimano 5800 GS 105 Pulley Set is a factory spec replacement that restores crisp, precise shifting to your 105 groupset without the cost of a full drivetrain overhaul. Use Cases Daily training. Reliable use across Indian training