Shimano Ultegra RX805 11 Speed Di2 Rear Derailleur

Description

Shimano Ultegra RX805 11 Speed Di2 Rear Derailleur Shadow +With an integrated chain stabilizer mechanism, the ULTEGRA RX 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-RX805 DI2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting.