ASG Infinity U-22000 Long Motor (high torque)ASG Infinity U 22000 Long Motor (high torque). High 22 TPA CNC quality motor for very heavy duty upgrades. Can use this motor in any custom upgrade gearbox build. This motor draws less power than other types and creates less heat. Uses the highest quality components for the best upgrade. U 22,000 22 TPA Rating (slightly faster speed and slightly less torque than the U 18000) Long axle type for most guns, most notably M4 guns.