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Upper CNC Machine Cup
Select the kit that matches the stanchion tube size of your Fox fork
Integrated MIPS Technology
SHADOW RD+ technology provides sharp and silky shifts along with chain stability and a reduction in chain slap thanks to to the clutch system
Narrow Wide tooth profile eliminates chain drop with the perfect chain mesh fit
BOX Three Prime 9 Speed Twin Lever Shifter - Black - Multi Shift - 22.2mm Bar Clamp - 9 Speed YGroup_7033423724589 Upper CNC Machine CupBox shook up the market when they introduced their wide range, 11 50T 9 speed drivetrain. The Box Three is the value option within the Prime 9 lineup. With Prime 9 you still get the wide range offered on competing 12 speed setups but with fewer shifts required to go up and down the gear range. Spend more time riding and less time tinkering with your gears on a Box Prime 9 setup. Who's this item for: Any rider wanting an 11 50T range in a 9 speed
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