Metco Motorsports MCR0004 4-lb Crank Pulley Ring for 03-04 Ford Mustang

Our crank pulley rings are designed for use with our Metco Motorsports Interchangeable Crank Pulley Kit offered for the supercharged Lightning truck and the supercharged Mustang Cobra.

These crank pulley rings are precision-machined from billet aluminum and then black-anodized for good looks and long-lasting surface protection.

If you already have the Interchangeable Crank Pulley Kit on your vehicle, one of these crank pulley rings is all that is needed to change your boost level.

Our crank pulley rings are available in several sizes, including an underdrive pulley for use with a KB, VMP, or Whipple supercharger, a stock-diameter ring, +2 lb, +4 lb, +6 lb, +8 lb, and +10 lbs.

When purchased separately, crank pulley rings do not include the (6) socket-head bolts and ribbed lockwashers used to secure the ring to the pulley hub.

Notes:

• Standard 8-Rib Drive
• The 10.5" and 11.0" crank pulley rings are intended for custom installations. The user assumes all responsibility for any modifications required for installation, including the appropriate supporting modifications. No boost level data or belt length data is available for these crank pulley rings. The underdrive 6.55" crank pulley ring will not fit the Innovators West balancer.