microSHIFT ADVENT Super Short Rear Derailleur - 9 Speed Super Short Cage BLK With Clutch Cartridge Bearing Angle-36x45 Weather-resistant YKK zipper prevents water

Weather-resistant YKK zipper prevents water seepage in wet conditions

Dropper post for shifting weight in steep and loose situations

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Mirror technology utilizes 3D printing from liquid polymer to create a one-of-a-kind honeycomb structure that offers superior sit-bone support and comfort

microSHIFT ADVENT Super Short Rear Derailleur - 9 Speed Super Short Cage BLK With Clutch Cartridge Bearing Angle-36x45 Weather-resistant YKK zipper prevents watermicroSHIFT ADVENT Super Short Rear Derailleur 9 Speed Super Short Cage Black With Clutch. The Super Short version of our 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