This device allows the driver to disconnect the output shaft from the driveshaft and safely run the car without having to hold in the clutch pedal. All normal driveline couplers stay engaged and do not rotate while the engine is running. The sliding coupler, output shaft, and driveshaft are made of heat-treated alloy steel, while the bearing retainer and fork assembly are machined from billet aluminum. The output shaft and driveshaft are custom made to the length required for your can depth and engine location. Due to the custom nature of this part, please call 1-866-508-6394 to order.