Founded in 1990, China Famen Bearing Co., Ltd. is specialized asp pulley manufacturer and asp pulleys distributor of all types of custom and cheap bearings. We obtained ISO9002, ISO14001, and QS9000 certificates in 1995 and 1996, 1999 respectively. Other advanced equipments include four RGB and RCI series heat treatment production lines with a treatment quantity totaling 1,500 kilograms per hour. The Multi-points temperature control meters and CNC display meters with bi-directional control have been adopted to complement these units.

One of the easiest things you can do to boost horsepower in your supercharged Lightning or Harley-Davidson F-150 is to change the blower pulley on the crankshaft. The new pulley has a larger diameter, which provides for more supercharger revolutions, and therefore . . . more boost! We installed the 9.75" pulley on our project truck, and in about an hour, our boost had risen from 8 psi to 16 psi. Add the Accufab single plate throttle body for better throttle response too, and your rig will feel like an all new truck!ASP Blower Crank Pulleys:Supercharged Harley-Davidson trucks achieve 2 psi less boost with these pulleys due to the fact that the upper blower pulley is larger than that of the Lightning (3.3" vs. 2.93").All ASP blower crank pulleys are CNC machined to perfection and black annodized for a sharp, clean appearance.Pulley kits include instructions and all neccessary hardware. Installation time is only about 60 minutes.

If you want to reduce parasitic power loss, an underdrive pulley is the easiest way to do that. This ASP pulley is 20-percent smaller than the stock unit, and ASP tells us it's good for about a 12hp increase at the flywheel.
The Performance Pulley systems are designed to increase horsepower by reducing accessory drag on your motor. Its new LS1 dampener pulley has a fluid based center, which will not cause spark sensors to retard timing with resultant loss of power.These pulleys have been dyno tested at 12 hp gain and are SFI approved.A new harmonic balancer bolt is included and the two required belts are listed below.

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