Industry Nine Hydra 2 Superboost CL Hub - Rear Collar Spacers/wavy washer go between the

Spacers/wavy washer go between the bottom bracket seals and the crank arm

From turning and milling bar stock 7075-T6 aluminum for shells

These springs can be used with bikes featuring linear or modestly progressive leverage curves that traditionally needed air shocks

Tubeless compatible [kit required]

that’s built to descend

Industry Nine Hydra 2 Superboost CL Hub - Rear Collar Spacers/wavy washer go between theCompletely re engineered using insights gleaned from more than 100,000 original Hydra hubs in the field, Hydra2 features a newly designed 65% thicker axle, larger 6903 bearings with new labyrinth seals, and enlarged pawl pockets that ensure bombproof durability under the most demanding conditions. If that wasnt enough, a refined drive ring and an extra tooth on each pawl enable Hydra2 to deliver lightning fast 0. 41 engagement with less coasting drag