All new from Barnett is the Scorpion "Under Cover" lock-up clutch. This clutch has added capacity to handle today's big inch motors and it is designed to fit under the stock primary cover- no modifications required! This clutch features a fully adjustable billet aluminum lock-up pressure plate multiple sets of heavy duty coil springs for a wide variety of spring pressure options. The adjustable lock-up arms allow the use of lighter springs resulting in reduced lever effort. Also included is a steel hub, Carbon friction plates, and tempered steel plates. From mild to wild- street to strip, the UC lock-up will handle your high performance clutch needs and provide smoother shifting and a more progressive, controllable engagement. Fits 1998-06 Big Twins (except '06 Dyna's). Made in the USA.