BOX Four Multi Shift Shifter - 8-Speed Black MFPN=01941 42 BB/Frame Interface BB30 BB/Frame

42 BB/Frame Interface BB30 BB/Frame Interface BB30a BB Shell Width (mm) 68 BB Shell Width (mm) 73 Spindle Interface Type BB30/PF30 Defined Color Silver

Compatible with all MTB and EMTB drivetrains

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

Fits a wheelbase of up to 50"

BOX Four Multi Shift Shifter - 8-Speed Black MFPN=01941 42 BB/Frame Interface BB30 BB/FramePrime 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