Kraftwerks 159-99-8564 Cogged Supercharger Pulley Width - 85mm 64mm

The Kraftwerks 159-99-8564 is an 85mm cogged supercharger pulley designed for use with Kraftwerks and Rotrex supercharger systems. This precision-engineered pulley features a 64mm width and utilizes a cogged belt design for improved traction and power transfer compared to traditional serpentine belt pulleys.

Key Features:

• 85mm diameter cogged pulley construction
• 64mm pulley width for cogged belt applications
• Six-bolt mounting pattern (requires adapter hub)
• Black anodized billet aluminum construction for durability
• Designed to optimize boost levels and supercharger performance
• Compatible with Kraftwerks supercharger systems using Rotrex units

Changing pulley size is one of the most effective ways to tune boost pressure in a supercharger system. The pulley controls the rotational speed of the supercharger, with smaller pulleys increasing boost and larger pulleys decreasing boost. This cogged design provides superior grip and reduced belt slippage compared to ribbed pulleys, making it ideal for high-performance applications. Always consult your supercharger system's documentation to ensure proper pulley sizing for your application.