RD-RX810 SHIMANO GRX - Rear Derailleur - SHIMANO SHADOW RD+ - 34T max low sprocket - 11-speed ORIGINAL SHIMANO WITH BOX 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 and ON/OFF switch for the chain tensioner. The RD-RX810 rear derailleur is compatible with road cassettes with a 34T low sprocket max. -Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping and drops SHIMANO SHADOW RD+ -Smooth and reliable mixed surface shifting Toggle clutch ON/OFF to match the terrain Switch stabilizer ON/OFF to match the terrain Gravel-tuned clutch tension -Compatible with current road DUAL CONTROL LEVER -Maximum front difference: 17T -Top sprocket: Max. 11T/Min. 11T Low sprocket: Max. 34T/Min. 30T Total capacity: 40T PRODUCT SPECIFICATIONS MODEL NO : RD-RX810 SERIES : GRX 11-speed Color : Series color Average weight : 255 Compatible chain : HG-EV 11-speed/HG-X11 Total capacity : 40T B-axle_Hollow axle : Cable adjuster : Mount_Direct attachment (Conventional) : Fluoric coated link bushings : 4 Low sprocket_Max. : 34T Low sprocket_Min. : 30T Max. front difference : 17T Pulley_G pulley bearing : Pulley_Sunken type pulley bolt : Pulley_Teeth : 13T Pulley_T pulley bearing : Top-normal spring type_SHIMANO SHADOW RD+ : Top sprocket_Max. : 11T Top sprocket_Min. : 11T Rear speeds : 11