Industry Nine Hydra 2 Boost MicroSpline Disc Hub Rear 28H 12mm TA 148mm Shimano Micro Spline Gold

Redesigned for durability under the most extreme use, with even faster engagement and less drag Thicker axles, larger beargins, larger pawls with an additional tooth, and a tougher drivering guarantee the Hydra 2 can easily handle the torque of powerful ebike motors 0.41 degree engagement Designed and build in Asheville, NC