Kraftwerks 159-99-853C 85mm 3-Rib Supercharger Pulley

The Kraftwerks 159-99-853C is an 85mm, 3-rib supercharger pulley designed for use with Kraftwerks Rotrex traction-drive supercharger systems. Swapping to a different diameter pulley allows tuners to fine-tune blower speed and boost output, tailoring the supercharger's performance characteristics to their specific build and power goals.

Key Features:

• 85mm diameter pulley for precise boost level adjustment
• 3-rib (C-section) belt profile for reliable power transfer
• Designed for use with Kraftwerks Rotrex traction-drive supercharger kits
• Allows tuning of supercharger input speed for optimized boost delivery
• Precision-machined construction for accurate fitment and balance
• Compatible with Kraftwerks supercharger systems using the matching belt specification

Kraftwerks supercharger pulleys are direct replacements and upgrade components engineered to work seamlessly within the Rotrex supercharger ecosystem. Verify belt compatibility before installation — a new belt is recommended when changing pulley diameter as part of good preventive maintenance.