Box Four 8 Speed Wide/Narrow Chainring spinimages=211 Hub includes Steel Bolts

Hub includes Steel Bolts

This has greatly minimized twist and contributed to responsiveness

Available as a multi-shift (pull several gears at once) or single-shift shifter (a sound choice for e-bikes)

The chain is available in both 126L and 144L lengths

immense adhesion in the corners

Box Four 8 Speed Wide/Narrow Chainring spinimages=211 Hub includes Steel BoltsThe Box Four Wide Narrow chainring completes that package for the 1x8 system. It is the first 8 speed specific chainring designed to optimize chain retention when using 8 speed chains. The tooth profile and thicknesses are tailored to match the inside geometry of the unique Box Four chain. SUPPORT MATERIAL View Prime 9 Drivetrain Compatibility Manual How is the Ebike variant different? View Prime 9 Comparison Chart Why Prime 9?