Does Your E-Bike Really Need a Torque Arm?
Does your e-bike need a torque arm? Grin’s testing shows a 12mm axle at 40 N·m spreads each dropout with nearly 1000 lb — who needs one, and who doesn’t.
September 24, 2026
Does your e-bike need a torque arm? Grin’s testing shows a 12mm axle at 40 N·m spreads each dropout with nearly 1000 lb — who needs one, and who doesn’t.