BOX Three Prime 9 eBike Cassette - 9-Speed 12-50t Black Model Name-Lumina Micro 900 CB7 custom carbon layup allows

CB7 custom carbon layup allows for radial compliance to soak up speed robbing impacts

Triple layer 60 tpi casing with puncture-resistant crown ply for comfort and durability

or heavier skiers

Misc Champagne Gold Primary Color Gold Size M Helmet sizing in cm 54 - 58cm e-Bike approved No Integrated Light No Visor Yes Certification CPSC EN1078 NTA 8776 E-bike

BOX Three Prime 9 eBike Cassette - 9-Speed 12-50t Black Model Name-Lumina Micro 900 CB7 custom carbon layup allowsThe Box Three Prime 9 cassette is a great all around cassette option. All cogs are stamped from steel and subsequently the larger ones are pinned to alloy spiders. It also features weight reducing holes on the cogs. The Box Three Prime 9 offers ultra wide ratio with consistent progressions Prime 9 technology offers the same range as a 12 speed drivetrain with fewer gears to shift through Fewer parts reduced weight and increased durability Cogs pinned