Shimano Groupe GRX Di2 RX815 1x11 40 - bike-components
GRX 400 (10 Speed) x2. Looking to upgrade to GRX 400. Has anyone got experience of what the optimum cassette size to use in the rear? Looking to get a low bail
Le gravel à votre manière | Shimano Gravel
Gravel Cyclist: Shimano GRX 2x with 11-40T Cassette | VeloNut
Shimano GRX RD-RX400 RD w/ 11-42 cassette - Bike Forums
Shimano-Ensemble de groupe de vélo de route, Di2, GRX, jas815, 11 vitesses, 170/172mm, 175mm, 40 T, 42T - AliExpress