Shimano Rear derailleur Grx Rd-rx812 11V

With an integrated chain stabilizer mechanism, the Shimano Grx derailleur offers a quieter experience and safe, accurate shifting on mixed terrain. For rides on smooth surfaces. the derailleur has an on/off switch for the chain tensioner. The Rd-Rx812 Di2 version offers the digital precision of electronic shifting Shimano and synchronized shifting. And is compatible with road cassettes with a low sprocket of 34 teeth Max.

Number of chainrings: 1

Teeth: Max 42t