Industry Nine Hydra 2 Boost MicroSpline

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 Attributes Axle Type 12mm TA Freehub Body Shimano Micro Spline Hub Spacing 148mm Hub Spoke Type J-bend Position Rear Rotor Mount 6-bolts