Product Description
APR's Supercharger Drive Pulley Upgrade decreases the diameter of the factory pulley from 63.25mm to 57.75mm, which in turn spins the supercharger 9.5% faster. This results in a healthy bump in horsepower and torque across the entire RPM range, with the supercharger operating at a higher rate of speed. The pulley is CNC machined from billet stainless steel, e-coated black for an OEM appearance, and is bolted to the factory supercharger unit.
APR's Supercharger Crank Pulley Upgrade increases the diameter of the factory pulley from 162mm to 187mm, which in turn spins the supercharger 15.4% faster. This results in a larger bump in horsepower and torque across the entire RPM range, as the supercharger is spinning at an even higher rate of speed. The pulley retains the factory harmonically balanced crank pulley and bolts on top of the existing unit. It is CNC machined from light weight billet aluminum with weight saving pockets throughout. It has an anodized black finish and includes new crank pulley bolts.
Upgrading both the supercharger drive and crank pulleys results in the factory supercharger spinning 26.4% faster than stock. This speed was chosen after extensive engine and chassis dyno testing with various pulley sizes and supercharger speeds. The result is an even higher horsepower and torque gain across the entire RPM range. However, at the airflow levels achieved with a dual pulley setup, maximum power is severely restricted by the factory throttle body unit. The APR Ultracharger Throttle Body Upgrade is necessary to take full advantage of the dual pulley configuration, and is available in platform specific variations for the B8/B8.5 A4/A4/S4/S5, Q5/SQ5 and C7 A6/A7.
Product Features:
* Full dual pulley kit.
* Bolt-On 57.75mm supercharger drive pulley.
* Bolt-On 187mm crank pulley.
* Spins the charger 26.4% faster for massive torque and HP gains with tuning.
* Anodized and E-coated factory black.
* Appropriate Belt Included.
* Software sold separately.
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FITS:
* 2012 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
* 2013 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
* 2014 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
* 2015 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
* 2016 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
* 2017 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
* 2018 AUDI A6 SEDAN QUATTRO (3.0L) V6 SUPERCHARGED
