Kraftwerks R50-99-0090 Rotrex Supercharger Pulley - 90mm 8-Rib

The Kraftwerks R50-99-0090 is a precision-engineered 90mm diameter 8-rib supercharger pulley designed specifically for Rotrex traction-drive superchargers. This factory replacement pulley is manufactured from black anodized billet aluminum for exceptional durability and heat dissipation while maintaining minimal weight.

Key Features:

• 90mm diameter pulley ring with 8-rib (8PK) profile design
• Black anodized billet aluminum construction for corrosion resistance
• Direct-fit replacement requiring no adapter hub
• Precision CNC machined for perfect fitment and balance
• Compatible with Rotrex C15, C30, and C38 supercharger units
• Genuine OEM Kraftwerks replacement part

This pulley is an essential replacement or upgrade component for Kraftwerks supercharger systems. Different pulley sizes affect boost pressure and supercharger speed—the 90mm pulley provides a balanced configuration for many applications. Kraftwerks recommends using only genuine Rotrex-approved pulleys to maintain optimal performance and ensure proper operation of your forced induction system. The pulley comes pre-assembled and ready to install on compatible Rotrex supercharger units.