Porsche Boxster S for use with single mass billet flywheel Year Span 2000-2004 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SP901S Torque Capacity 420 Pricing $699.00 Stage 2 Product Number SP902S Torque Capacity 485 Pricing $799.00 Stage 2+ Product Number SP903HS Torque Capacity 545 Pricing $839.00 Stage 3 Product Number SP903S Torque Capacity 580 Pricing $799.00 Stage 3+ Product Number SP903FS Torque Capacity 671 Pricing $979.00 Stage 4 Product Number SP904 Torque Capacity 580 Pricing $799.00 Stage 5 Product Number SP905 Torque Capacity 820 Pricing $1,099.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SP87A Pricing $899.00 Steel Product Number SP87S Pricing $929.00 None Not Available Pricing Specialty Products Billet Aluminum Flywheel Replacement Friction Plate with Fasteners (Included on Flywheel) $89 Diamond ground, includes self-locking fasteners Questions? Give us a call. 1-800-828-4379