With 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 an ON/OFF switch for the chain tensioner. The RD-RX812 rear derailleur is compatible with MTB cassettes with a 42T low sprocket max.
B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.
The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.
Mfg PartNum: IRDRX812 | |
Discipline: Gravel | |
Mfg PartNum: IRDRX812 | |
Mfg PartNum: RD-RX812 | |
Series: SHIMANO GRX 11-speed | |
Weight: 267 g | |
Compatible chain: HG-EV 11-speed/HG-X11 | |
Low sprocket: 42T (max) / 40T (min) | |
Rear Speeds: 11 | |
Top-Normal Spring Type: SHIMANO SHADOW RD | |
Top sprocket: 11T (Max/Min) | |
Total Capacity: 31T | |
Actuation: Mechanical | |
Mount Type: Standard Rear Hanger | |
Speed: 11 | |
