BOX Three Prime 9 Cassette - 9-Speed - 11-50t - Black For Carbon Rims Color: Silver/Silver/Blue

Color: Silver/Silver/Blue

This will fit the new USA made MCS spiders and flat-top BMXGuru Spiders

Color: Red / Black

this tire is offered in a narrower size for ultimate speed and efficiency

in addition to black chinring bolts

BOX Three Prime 9 Cassette - 9-Speed - 11-50t - Black For Carbon Rims Color: Silver/Silver/BlueThe Box Three Prime 9 cassette delivers versatile performance for riders seeking wide gear range without complexity. Steel cogs are strategically pinned to lightweight alloy spiders, while weight reducing holes minimize rotational mass. Prime 9 technology packs 12 speed range into a 9 cog setup, cutting shift points and simplifying drivetrain maintenance. Fewer components mean less weight, greater durability, and easier upkeep. Compatible with