APR Supercharger Dual Pulley Kit for 2009-2018 Audi A6/A7/S4/S5/Q5/SQ5 - Press On (57.75mm/187mm)

Fits select 2009-2018 Audi A6, A7, A8, Q5, Q7, S4, S5, and SQ5 models.

The APR Dual Pulley Kit maximizes boost pressure by increasing the supercharger's rotational speed by approximately 26.4% over stock. By upgrading both the drive and crank pulleys, this kit optimizes the blower's efficiency to deliver significant horsepower and torque gains across the entire powerband. This specific kit utilizes a press-on drive pulley design for a secure, factory-style fitment.

The included 57.75mm drive pulley is CNC machined from billet stainless steel and e-coated black for an OEM appearance, reducing the diameter from the 63.25mm stock unit. The 187mm crank pulley is CNC machined from lightweight billet aluminum with weight-saving pockets and an anodized black finish. It bolts directly to the existing factory harmonic balancer to maintain engine balance while increasing the pulley diameter from 162mm.

• Increases supercharger speed by 26.4% for maximum power gains
• 57.75mm billet stainless steel press-on drive pulley
• 187mm lightweight billet aluminum bolt-on crank pulley
• Retains factory harmonic balancer for engine longevity
• Includes replacement drive belt and new crank pulley bolts
• Requires APR Stage II+ Dual Pulley software (sold separately)
• Recommended for use with APR Ultracharger Throttle Body for maximum airflow