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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 press fitted 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. Belt Included Software sold separately
Features:
- Full dual pulley kit
- Press 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
- Retains factory harmonic balancer
Year
Make
Model
Submodel
Engine
2009 - 2011
Audi
A6 Quattro
Avant
3.0
2009 - 2013, 2017 - 2018
Audi
A6 Quattro
Base
3.0
2017
Audi
A6 Quattro
Competition
3.0
2012 - 2013, 2018
Audi
A6 Quattro
Premium
3.0
2012 - 2013, 2017 - 2018
Audi
A6 Quattro
Premium Plus
3.0
2012 - 2013, 2017 - 2018
Audi
A6 Quattro
Prestige
3.0
2013, 2017 - 2018
Audi
A6 Quattro
S Line
3.0
2012 - 2013, 2017 - 2018
Audi
A7 Quattro
Base
3.0
2017
Audi
A7 Quattro
Competition
3.0
2017 - 2018
Audi
A7 Quattro
Premium Plus
3.0
2017 - 2018
Audi
A7 Quattro
Prestige
3.0
2012 - 2013, 2017 - 2018
Audi
A7 Quattro
S Line
3.0
2013, 2017 - 2018
Audi
A8 Quattro
Base
3.0
2013, 2017 - 2018
Audi
A8 Quattro
L
3.0
2013, 2017 - 2018
Audi
A8 Quattro
Premium
3.0
2013, 2017
Audi
Q5
Base
3.0
2013, 2017
Audi
Q5
Premium Plus
3.0
2013, 2017
Audi
Q5
Prestige
3.0
2011 - 2015
Audi
Q7
Base
3.0
2011 - 2015
Audi
Q7
Premium
3.0
2011 - 2015
Audi
Q7
Premium Plus
3.0
2011 - 2015
Audi
Q7
Prestige
3.0
2011 - 2015
Audi
Q7
S Line
3.0
2011 - 2015
Audi
Q7
TDI
3.0
2010 - 2016
Audi
S4
Base
3.0
2014 - 2016
Audi
S4
Premium Plus
3.0
2014 - 2016
Audi
S4
Prestige
3.0
2012 - 2017
Audi
S5
Base
3.0
2010 - 2013
Audi
S5
Cabriolet
3.0
2014 - 2016
Audi
S5
Premium Plus
3.0
2014 - 2016
Audi
S5
Prestige
3.0
2014 - 2017
Audi
SQ5
Base
3.0
2014 - 2017
Audi
SQ5
Premium Plus
3.0
2014 - 2017
Audi
SQ5
Prestige
3.0
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