Opel GT Roadster non-ratcheting clutches for use only with SPEC billet single mass flywheels Year Span 2007-2009 Performance Clutch Kits Product Number Torque Capacity Pricing Choose Clutch Single Stage 1 Product Number SC401-2 Torque Capacity 335 Pricing $459.00 Stage 2 Product Number SC402-2 Torque Capacity 395 Pricing $556.00 Stage 2+ Product Number SC403H-2 Torque Capacity 440 Pricing $549.00 Stage 3 Product Number SC403-2 Torque Capacity 495 Pricing $479.00 Stage 3+ Product Number SC403F-2 Torque Capacity 555 Pricing $699.00 Stage 4 Product Number SC404-2 Torque Capacity 495 Pricing $489.00 Stage 5 Product Number SC405-2 Torque Capacity 655 Pricing $699.00 None Not Available Pricing Flywheels Product Number Pricing Choose Flywheel Aluminum Product Number SC40A-2 Pricing $489.00 None Not Available Pricing Specialty Products Billet Aluminum Flywheel Replacement Friction Plate with Fasteners (Included on Flywheel) $89 Diamond ground, includes self-locking fasteners Additional Clamp Load Upgrade $139.00 Adds billet pressure plate option and increases capacities by additonal 130 ft lbs torque. Questions? Give us a call. 1-800-828-4379