Shimano GRX RD-RX812 Rear Derailleur - 11-Speed Long Cage BLK With Clutch For 1x 42t Low Sprocket Max CheckoutTitle=Shimano Alivio SL-M3100-2L Shifter - Left Hollow pins feature a hardened

Hollow pins feature a hardened chrome treatment for long-term durability

HotDog Piston features the same Low Speed Compression control that Super Deluxe is known for but with less High-Speed Compression allowing the wheels to get out of the way in rough terrain while providing more grip in high-speed chatter

use in combination with the standard bottom bracket for your chosen frame

Solid pins inner and outer plates make for an economical chain choice with all the performance of higher level X-Series chains

Shimano GRX RD-RX812 Rear Derailleur - 11-Speed Long Cage BLK With Clutch For 1x 42t Low Sprocket Max CheckoutTitle=Shimano Alivio SL-M3100-2L Shifter - Left Hollow pins feature a hardenedThe Shimano GRX 11 speed rear derailleur has an integrated chain stabilizer mechanism that provides a quieter experience shifting security and precision on mixed terrain. For rides on smooth surfaces the derailleur features an ON OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted rear shifting on rough terrain. Adjustable Shimano RD+ chain stablizer prevents chain slapping and drops