Rear derailleur Shimano GRX Di2 RD-RX815 SH+ 2x11-speed

SHIMANO GRX – DI2 - Rear Derailleur - SHIMANO SHADOW RD+ - 34T max low sprocket - 11-speed. 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-RX815 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. and is compatible with road cassettes with a 34T low sprocket max.Adjustable chain stabilizer prevents chain slapping and dropsSwitch stabilizer ON/OFF to match the terrainGravel-tuned clutch tensionSilent and uninterrupted rear shifting on rough terrainSmooth and reliable mixed surface shiftingCompatible with current road DUAL CONTROL LEVERWeight: 287 gDirect attachment E-tube port (pcs): 1Firmware update by E-TUBE Project Fluoric coated 4 link bushingsMaximum smallest sprocket: 34TMinimum smallest sprocket: 30TMax front difference 17TRear speeds 11Sealed pulley bearing Top-Normal Spring Type SHADOW RD+Maximum biggest sprocket: 11TMinimum biggest sprocket: 11TTotal capacity: 38T