Shimano ST-RX815, GRX Di2, ELECTRONIC SHIFT - FRONT

lubricant can be immediately applied and the bike can go on its way

AXS enabled for easy wireless setup

more durable and easier to use

Composition - Upper: Lightweight Polyurethan - PolyesterLining: PolyesterOutsole: Nylon Composite - Glass Fiber Composite - Thermo PolyurethaneFootbed: 3D molded Ethylene vinyl acetate (EVA) - Nylon

Total gear range

PaceStar: fast-rolling cross country compound with easy-rolling base layer

The best choice for the majority of wheels

Created with design feedback from pro Team Sky

Easy to install and compatible specifically with the Aspero model

indicator LEDs

Original part on all 2018 derailleurs from Record to Centaur

and the lightest model yet it’s like wearing nothing at all