Shimano Cambio posteriore Pezzo di ricambio | Bike-Discount
When to replace your jockey wheels - avoid an expensive mechanical issue and improve your shifting | road.cc
Garbaruk GRX cage extends Shimano gravel derailleur range, up to 50T cassettes! - Bikerumor
So my GRX 400 rear derailleur jockey wheels became ninja stars and I cant get some new GRX specific ones. Will other shimano jockey wheels also work? : r/bikewrench