Shimano GRX RD-RX812 11-Speed Rear Derailleur Long Black pickuponly Steel press-fit cups offer durability

Steel press-fit cups offer durability and allow for easy installation

Using a special design where the maximum number of balls are inserted into the bearing

2-piece ball and socket system

Fits Shimano/ISIS

Easy connect

Shimano GRX RD-RX812 11-Speed Rear Derailleur Long Black pickuponly Steel press-fit cups offer durabilityWith an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping