Used item, used for about a week. For Gyro X and Gyro Canopy, TD02-110 TD02 TA03, made by Hunter. Compatible models: Gyro X: Vehicles with frame numbers starting with TD02-110 Gyro Canopy: Vehicles with frame numbers starting with TA03-110 *Vehicles with TD02/TA03 frame numbers prior to the above numbers are not compatible because they do not have the "Sensor Assy Speed" that detects the rotation speed on the axle. By simply disconnecting the "Sensor Assy Speed" coupler (black coupler near the coolant filler) installed on Gyro series vehicles with chassis numbers (TD02-110/TA03-110) and connecting this product in its place, you can release the "Sensor Assy Speed" and increase the top speed. This product does not release the engine speed limiter built into the ECU. If the drive system is worn, the engine speed limiter may activate before the "Sensor Assy Speed" limiter, so this product may not be effective. Therefore, please refresh the drive system at the same time as installing this product. *If you have customized the weight rollers or pulleys to increase engine speed, or if you have changed to tires with a smaller outer diameter, the engine speed limiter may activate first, and you may not feel the effect.