Shimano Saint M820-SS1 10-Speed Direct Mount Shadow Plus Rear Derailleur shortThe new standard in DH rear derailleurs New chain control and silencing technologies exclusive to Saint debut in the new short cage Saint Shadow Plus RD M820. Unique features include a new silent bump stopper, Shadow Plus chain control technology and a cassette mode converter. The third generation of Saint was developed under the Pure Gravity design philosophy with a clear focus on downhill speed. New Saint is dedicated to DH racing, new Saint