Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output
*NOTE: This kit must be used with appropriate "Stage 2" performance software.
Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output
*NOTE: This kit must be used with appropriate "Stage 2" performance software.
Larger diameter crank pulley & smaller supercharger pulley increases the speed at which the supercharger spins, increasing the boost pressure output
*NOTE: This kit must be used with appropriate "Stage 2" performance software.
M10x60 - Install new hardware with your new parts
For removal and installation of harmonic balancers on most automotive and light truck applications.
Replace your cracked or worn belt
Up to the 2012 model year
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-21-2026
Keep your supercharger belt tight
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Up to production date 7/11/2011
Spin the supercharger faster without affecting the accessory drive system
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Appropriate stage 2 software is required for use
Spin the supercharger faster without affecting the accessory drive system
10X Entries For Our 25th Anniversary Sweepstakes!
Appropriate stage 2 software is required for use
Larger diameter pulley increases the speed at which the supercharger spins, increasing the boost pressure output
*NOTE: This kit must be used with appropriate "Stage 2" performance software.
Also referred to as the 'relay roller'
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Keep your accessories running properly with a new tensioner and drive belt
From the 2013 model year
Keep your accessories running properly with a new tensioner and drive belt
Up to the 2012 model year
Increases diameter of factory pulley from ~162mm to ~187mm, which in turn spins the supercharger ~15.4% faster!
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APR Stage II software is required to run any upgraded Pulley configuration and is sold separately - Pleas
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-21-2026
Install kit used for APR MS100035
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To be used for APR Supercharger Drive Pulley Upgrade MS100135
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-21-2026
Contains a Supercharger Reduction Pulley and drive belt for the Audi 3.0T models
Does not include securing hardware
Fits all up to the 2012 model year. For Bosch style alternators from the 2013 model year
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-21-2026