microSHIFT Acolyte Super Short Rear Derailleur - 8 Speed, Super Short Cage, Black, With SpringLock

Delivering full sized performance in a compact sized package, the Acolyte Super Short rear derailleur provides a full set of features for off road riding on a platform that's compatible with small wheel sizes down to 20". With the same features as the standard sized Acolyte, you can ride Super Short as hard as you want, no matter how tall you stand.