HKS 12999-AK006 GT Supercharger Pulley - 8-Rib 110mm

The HKS 12999-AK006 is a precision-engineered 110mm supercharger pulley designed specifically for HKS GT Series supercharger systems. This 8-rib pulley is an essential component for optimizing forced induction performance and maintaining proper belt engagement in centrifugal supercharger applications.

Key Features:

• 110mm diameter pulley for balanced power output
• 8-rib serpentine belt design for superior grip and reduced slippage
• Precision-machined construction ensures durability and long-lasting performance
• Compatible with HKS GT Supercharger Universal Type models: GTS4025, GTS7040, GTS8550, and GTS8555
• Black anodized finish for corrosion resistance and clean engine bay appearance

This pulley enables the HKS GT centrifugal supercharger to deliver lag-free, linear forced induction power across the entire RPM range. The 110mm sizing provides a balanced boost level suitable for street and performance applications. The 8-rib design ensures optimal belt contact and prevents slippage under high boost conditions, allowing for stable torque delivery from low to high engine speeds.

Note: This is a replacement pulley component only. Supercharger unit and related hardware sold separately. Professional installation recommended to ensure proper belt alignment and tension.