Porsche Boxster sprung hub kits for use with single mass billet flywheel Year Span 1997-1999 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SP881S Pricing $625.00 Stage 2 Product Number SP882S Pricing $709.00 Stage 2+ Product Number SP883HS Pricing $719.00 Stage 3 Product Number SP883S Pricing $681.00 Stage 3+ Product Number SP883FS Pricing $799.00 Stage 4 Product Number SP884 Pricing $679.00 Stage 5 Product Number SP885 Pricing $789.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SP88A Pricing $789.00 None Not Available Pricing Specialty Products Billet Flywheel Replacement Friction Plate Kit with Fasteners $79.00 Diamond ground, includes self-locking fasteners Questions? Give us a call. 1-800-828-4379