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 Weight: 132g (excluding holster)

Weight: 132g (excluding holster)

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

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

Bearing Type Sealed Cartridge Cassette Body Type Shimano/SRAM 11 Speed Road Cassette Body Type Shimano/SRAM 8 9 10 Speed Color Black Defined Color Black Hub Drilling 24 Hub/Brake Compatibility Rim Brake Rear Axle QR x 130mm Skewer Included No Spoke Interface Straight Pull

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 Weight: 132g (excluding holster)The 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