Industry Nine Hydra Classic Rear Hub - 12 x 148mm 6-Bolt XD Purple 28H Model=Hydraulic Brake Pressure/Motor Cut-Off Switch Stainless Steel Track Lockring

Stainless Steel Track Lockring

Drastically reduces operating temperature by 30% compared to many of the other high-end brake discs on the market

Not compatible with Shimano Asymmetric 110 BCD Cranks or Campagnolo CX10/11 cranks

}Park Tool MWR-17 Metric Wrench Ratcheting 17mm

Industry Nine Hydra Classic Rear Hub - 12 x 148mm 6-Bolt XD Purple 28H Model=Hydraulic Brake Pressure/Motor Cut-Off Switch Stainless Steel Track LockringIndustry Nine Hydra Classic Rear Hub 12 x 148mm 6 Bolt XD Purple 28H. Industry Nine Hydra Classic hubs are the heart of your wheelset everything revolves around them literally. Every Classic Hydra hub is made start to finish in Asheville NC. 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 in house anodization lab every step of design engineering manufacturing