WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The APR Dual Pulley Upgrade System (MS100184) is the ultimate step for maximizing the performance of the Audi 3.0 TFSI supercharged engine. This comprehensive kit includes both the 57.75mm Press-On Supercharger Drive Pulley and the 187mm Overdrive Crank Pulley. By decreasing the size of the top pulley and increasing the size of the bottom pulley, the supercharger spins 26.4% faster than stock, delivering massive gains in horsepower and torque throughout the entire powerband.
The drive pulley is CNC-machined from billet stainless steel and e-coated black for a stealthy, OEM appearance. The crank pulley is CNC-machined from lightweight billet aluminum and is designed to bolt directly onto the factory harmonic balancer, preserving engine smoothness while increasing boost. To ensure reliability under the increased load, APR includes the appropriately sized high-performance drive belt to prevent slippage.
Features:
- Dual Pulley Performance: Combines a 9.5% increase from the drive pulley and a 15.4% increase from the crank pulley for a total 26.4% increase in supercharger speed.
- Premium Materials: Billet stainless steel drive pulley and lightweight billet aluminum crank pulley with weight-saving pockets.
- Stealth Aesthetics: Finished in e-coat and black anodizing for a professional, factory-integrated look.
- Harmonic Balance: The crank pulley design retains the factory harmonic balancer to ensure long-term engine health and vibration control.
- Complete Hardware: Includes the necessary high-grade replacement crank pulley bolts and the specific drive belt required for this ratio.
Product Contains:
- (1) 57.75mm Press-On Supercharger Drive Pulley
- (1) 187mm Overdrive Crank Pulley
- (1) High-Performance Drive Belt
- (1) Set of Crank Pulley Bolts
Critical Hardware & Software Requirements:
Mandatory Requirements: To utilize this kit safely and effectively, the following are required:
- Stage 2 Dual Pulley ECU Software: Specific software recalibration is required to manage the increased boost levels (sold separately).
- Cooling Upgrade: An upgraded intercooler/heat exchanger system (such as the APR CPS) is highly recommended to manage increased IATs.
- Ultracharger Note: At dual pulley airflow levels, the factory throttle body becomes a major restriction. The APR Ultracharger is recommended to unlock the full power potential of this setup.
- Installation Tool: The APR Pulley Removal Tool (MS100025) is required to remove the factory press-on drive pulley.
Installation Instructions
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