BOX Four Multi Shift Shifter - 8-Speed Black MFPN=01941 Particularly reliable protection

Particularly reliable protection

4mm Steerer Tube 1-1/8

Carbon fiber reinforced nylon midsole for power transfer

CNC machined aluminum side plates with integrated magnetic quick link holder (SV 16 only)

Sealed bearings 14mm heat-treated axle 9t driver and even a nylon hub-guard

BOX Four Multi Shift Shifter - 8-Speed Black MFPN=01941 Particularly reliable protectionPrime 9 Technology for greater simplicity and durability Available in single shift option for eMTB to keep the user from shifting multiple gears under load, significantly reducing the rate of bent teeth and broken chains Multi shift option changes up to 3 gears at once for non eMTBs Box One features: diecast top shell, machined clamp, diecast release lever, and a stainless braided lo friction cable Box Two features: diecast top shell, and extruded