microSHIFT ADVENT Super Short Rear Derailleur - 9 Speed, Super Short Cage, Black, With Clutch RD0039

The Super Short version of the acclaimed microSHIFT ADVENT derailleur has all the same features as its larger counterpart, but with a small enough cage to fit on a 20" wheeled bike. The ratchet-and-pawl clutch and return spring tension have been finely tuned to offset the smaller cage and lighter chain, allowing the derailleur to deliver fast, accurate shifts with a light feel. The fully metal body resists damage and provides extra rigidity, delivering big performance in a small package.