Prime 9 Technology for less derailleur travel and better chainline. Less wear and improved lifespan Box One features: Adjustable Tri-Pack limited slip clutch, forged inner and outer cage, Pivot-Tech cable stay, sealed bearing pulleys and 3D forged linkages Box Two features: Tri-Pack limited slip clutch, forged inner and outer cage, Pivot-Tech cable stay, sealed bushing pulleys and 3D forged linkages Box Three features: Limited Slip Clutch, stamped front/rear cage, direct channel cable stay and bearing pulleys Box Four features: 8 speed with Prime 9 technology and the same construction as Box Three Limited Lifetime Warranty 3rd party web sales must be an Authorized Dealer
model | Box Three Prime 9 | speed | 9sp | cage | X-wide | min/max | 11/50t | weight | 290g | color | black | |