The Industry Nine Hydra Classic Boost CL Rear Hub is the heart of your wheel, everything revolves around them, literally. Every Hydra Classic mountain hub is made start to finish in I9's Asheville, NC machine shop. From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to their own in-house anodization lab, every step of design, engineering, manufacturing and assembly is done on premises to I9's exacting standards. Hydra is designed with lightning quick 690 POE resulting in 0.52° between engagements offering the rider previously unheard of responsiveness. This near instantaneous engagement allows the bike to claw up the most technical climbs, manual at a split seconds notice and rocket out of every corner. The four-bearing hub utilizes external seals for longevity and moisture prevention, while the oversize axle provides rear end stiffness. The large diameter disc flange improves wheel stiffness and braking torque transfer plus the angled flanges provide lower spoke stresses. Made in Asheville, NC, USA.
Cassette Body: Shimano HG 9, 10, 11 speed
Hub Spacing: Boost 148mm
Axle: 12mm thru-axle
Brake Mount: Center Lock
Spoke Drilling: 28, 32 hole
Weight: 265 grams
One coupon per order
Discount taken off MSRP for normal items
Custom kit pricing is complicated so we take the discount off the current build price
In stock items only
Coupons can not be combined with promotional gift certificates, however, purchased gift certificates may be used with the coupons. If you would like to use your coupon with a purchased gift certificate, please leave the gift certificate information in the comments section at checkout, and they will be applied during processing on the backend.
Some items are restricted
Groupsets, hand built wheels, special orders & labor costs are excluded from the coupon.
Additional exclusions may apply.