APR 16-18 Audi A7 Quattro Dual Pulley Kit - Bolt On

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.Belt IncludedSoftware sold separately

This Part Fits:

Year	Make	Model	Submodel
2017	Audi	A6 Quattro	Competition
2018	Audi	A6 Quattro	Premium
2016-2018	Audi	A6 Quattro	Premium Plus
2016-2018	Audi	A6 Quattro	Prestige
2018	Audi	A6 Quattro	Sport
2016	Audi	A6 Quattro	TDI Premium Plus
2016	Audi	A6 Quattro	TDI Prestige
2017	Audi	A7 Quattro	Competition
2016-2018	Audi	A7 Quattro	Premium Plus
2016-2018	Audi	A7 Quattro	Prestige
2016	Audi	A7 Quattro	TDI Premium Plus
2016	Audi	A7 Quattro	TDI Prestige
2015	Audi	A8 Quattro	Base
2015-2018	Audi	A8 Quattro	L
2015-2016	Audi	A8 Quattro	L TDI
2017-2019	Audi	Q7	Premium
2017-2019	Audi	Q7	Premium Plus
2017-2019	Audi	Q7	Prestige