Box Four 8 Speed Wide/Narrow Chainring spinimages=211 it remains the most durable

it remains the most durable cassette in the range

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

This has greatly minimized twist and contributed to responsiveness

We've chosen to modernize the 8-speed in much the same way we did the 9-speed for Prime 9

Box Four 8 Speed Wide/Narrow Chainring spinimages=211 it remains the most durableThe 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?