King Performance 6.72" Billet "Heavy" Pulley System — Complete Kit | Air-Cooled VW

King Performance 6.72" Billet "Heavy" Pulley System — Complete Kit | Air-Cooled VWKing Performance Billet "Heavy" Pulley System Complete Kit Experience superior engine stability and precision with the King Performance "Heavy" Pulley System. Designed for high performance air cooled builds, this 100% USA made kit is engineered to provide the rotating inertia needed for smooth idling and reduced harmonic vibration, especially in high revving engines. This "frenched" design features a high strength steel hub recessed into the crank

King Performance Billet "Heavy" Pulley System – Complete Kit

Experience superior engine stability and precision with the King Performance "Heavy" Pulley System. Designed for high-performance air-cooled builds, this 100% USA-made kit is engineered to provide the rotating inertia needed for smooth idling and reduced harmonic vibration, especially in high-revving engines.

This "frenched" design features a high-strength steel hub recessed into the crank pulley, ensuring maximum structural integrity. It is also fully EFI-ready, with the back of the pulley pre-tapped to accept the Dub Shop Trigger Wheel for a seamless ignition or fuel injection setup.

Engineering & Material Specs

• 100% Made in the USA: Manufactured in-house using premium U.S.-sourced materials.

• Superior Hybrid Construction: Pulleys are CNC-machined from 6061-T6511 billet aluminum.

• Frenched Steel Hub: Mounted on a heat-treated 4140 chromoly steel hub with a black zinc finish for lifetime durability and perfect concentricity.

• Hard-Anodized Protection: Finished in a heavy-duty .0015" thick hard black anodizing for extreme wear resistance.

• "Heavy" Performance Sizing: * Crank Pulley: 6.720" (170.7mm) Diameter

  • Weight: 3.93 lbs (Provides essential rotating mass for high-performance builds)

  • Alternator Pulley: 4.3" Diameter (Performance ratio)

Configuration Options

Choose the outer diameter (OD) that fits your specific case setup:

• Stock OD (1.750")

• Sand Sealed OD

What’s Included

This comprehensive kit includes all necessary high-grade hardware for a professional installation:

• 6.720" Billet "Heavy" Crank Pulley & 4.3" Billet Alternator Pulley

• 7075-T651 Hard Black Anodized Nut

• 6061-T651 Clamp Washer

• Crank Pulley Bolt & Washer

• Precision Shims: Includes .005" thick shims for perfect belt alignment.

• Bonus Item: High-quality belt included at no charge (provided as a size recommendation; actual needs may vary).

Technical Notes & Warranty

• EFI Ready: Pre-tapped mounting holes designed for immediate use with the Dub Shop Trigger Wheel.

• Safety Note: A dash "dummy light" is highly recommended to monitor belt status during operation.

• Anodizing Note: Finish may naturally fade or change color over time due to engine heat and UV exposure.