Universally fits larger shaft motors including Warp 13, Transwarp 7, Transwarp 9, Transwarp 11, As mentioned before knowing the speed of the motor shaft is essential to various EV operations including transmission shifting. Here's a bolt-on accessory that's made to be flexible, easy to install, and provides essential RPM data. This shaft speed rotation sensor kit mounts to the tail shaft of a variety of large shaft motors. Then provides the wiring to be directly connected to a multitude of guages both aftermarket and OEM or can be used with your motor controller. Beam up one, Scotty and fine tune your investment and avoid red lining before shifting.