box-one-7-speed-dh-rear-derailleur
box-one-7-speed-dh-rear-derailleur, The Box One 7-speed Downhill Rear Derailleur is based on our 11-speed drive-train but has a the signature white short cage and beefed up compact linkages. Other fab features include a fully adjustable Tri-Pack(TM) Clutch, and optimization for an 11-24T cassette. These guys are tuned for the most demanding downhill runs.