a new benchmark for Aluminium MTB crank arms

Made from high grade Japanese stainless steel these rotors are made to last

so you can push your limits without distraction

What size bikes can it carry: 20' to 29' wheels

Industry Nine Hydra Rear 6 Bolt Disc Hub - Rear - 12x148mm Boost - 6 Bolt - 32 Hole - J-Bend - Black Ignore Wholesale Tier 2 Brand Rule a new benchmark for AluminiumEvery part of Industry Nine's Hydra Classic hubs is made from their factory in Asheville, North Carolina. From machining the hub body to cutting the steel for the pawls and drive rings and finally anodising. It's not the cheapest way to do it, but if you want the best result, it's certainly the only way to achieve that. Who's this item for: Any MTBer chasing a premium level hub. They're at home on the lightest XC bikes to the burliest Enduro rigs.