Standard Torque Arm

When in place, this will keep your axle from spinning in your dropout.

12mm for 500W motors
14mm for 1000W motors

HIGHLY recommended for aluminum front forks.

Please note, 12mm variant does not have U-shape washer, instead is a tabbed washer.

HIGHLY recommended for rear aluminum frames with shallow dropouts (if your axle isn't fully inside the dropout, use a torque arm).