928 Motorsports, LLC ®
 
 

     
     
     
928 Motorsports
r o a d   m a p
928 Motorsports

928 Motorsports
m u l t i m e d i a
928 Motorsports
928 Motorsports 928 Motorsports

t r a c k   t i m e

 

 

8-Rib Power Pulleys for Powerdyne, Vortech®, Paxton Superchargers with Sur-Grip®


Fits all Superchargers with a 0.785" shaft

Sur-Grip® fights Belt Slip!

What Sur-Grip® is: Sur-Grip® is a tungsten-alloy granular coating that is applied into the vees of the pulleys with a process called Electrofusion. This process creates a true metallurgical bond with the pulley and very high bond strength. The granular surface allows the rubber in the belt to "key" into the pulley, greatly increasing its tractive force. In addition to increasing the surface friction for the belts, it also increases the surface hardness of the material up to 72Rc, making the pulley itself more durable also.

Choose from these 8-rib Pulleys with Sur-Grip®:
  • 2.50" pulley, Natural finish only
  • 2.62" pulley, anodized in BLACK or NATURAL finish
  • 2.75" pulley, anodized in BLACK or NATURAL finish
  • 2.87" pulley, anodized in BLACK, or NATURAL finish
  • 2.93" pulley, Natural finish only
  • 3.00" pulley, Natural finish only
  • 3.15" pulley, Natural finish only
  • 3.25" pulley, Natural finish only

*All PSI estimates based on a crankshaft pulley being 6.5" in diameter operating at 6,000 RPM)

TOP QUALITY! Our supercharger pulleys are made from a single 6064 alloy aluminum billet, and turned to an accuracy within .001 of an inch. Unlike poorly-made pulleys that have straight-cut belt vees - that cause belt slippage - ours are properly V-Cut for maximum belt contact! Then, the Red and Blue pulleys are sent off to be anodized for toughness and good looks. Natural-finish (silver) pulleys are not anodized.

DIAL IN YOUR BOOST! Measure your current supercharger pulley across the belt lands as shown in the photo below. The next smaller size pulley will create more boost than you have now. Racers also exchange pulleys to bring the boost in right where they want it to match their gearing.

A GENERAL RULE of THUMB: on a properly tuned and fueled engine, you should gain about 20 HP per 1 PSI of boost.

Pulley Sizing Advice: What is the right-size pulley for your Powerdyne application? Click Here

Customers who purchased this item, also purchased

  • Pulley Spacers for Powerdyne and Vortech®

  • 928 Motorsports - 8-Rib Power Pulleys for Powerdyne, Vortech®, Paxton Superchargers with Sur-Grip®
    Click to Enlarge
    928 Motorsports - 8-Rib Power Pulleys for Powerdyne, Vortech®, Paxton Superchargers with Sur-Grip®
    Click to Enlarge
    928 Motorsports - 8-Rib Power Pulleys for Powerdyne, Vortech®, Paxton Superchargers with Sur-Grip®
    Click to Enlarge
    928 Motorsports - 8-Rib Power Pulleys for Powerdyne, Vortech®, Paxton Superchargers with Sur-Grip®
    Click to Enlarge

    928 Motorsports® 8-Rib Power Pulley with Sur-Grip®

    Size & Finish

    Price (USD)

    Shipping*

    Availability

    $154.20

    $10.00

    In Stock!   Typically Ships Same Day!

    * Domestic US shipping shown. International shipping will be calculated based on location.

     
       
           

    Phone: (920) 485-0928
    Email: info@928motorsports.com

    928 Motorsports, LLC - All Rights Reserved
    Horicon, Wisconsin USA

    928Motorsports.com - Performance Parts for your Porsche® 928