The SPEC Super Twin is a full-size twin-disc clutch system engineered for high-torque, high-rpm applications. The SS-Trim trim runs sprung semi-metallic friction material across two discs for a large jump in holding capacity over a single-disc clutch while staying streetable, and the kit ships complete with pressure plate, discs, flywheel, and the hardware needed for installation. Fits Nissan Skyline R31 (1985-1989), R32 (1989-1994) and R33 (1993-1998). Chassis/engine-keyed import application; confirm transmission and input shaft spline before ordering.
Specifications
| System | Super Twin |
| Trim | SS-Trim |
| Configuration | Twin disc |
| Friction Material | Sprung semi-metallic |
| Flywheel | Steel |
| Part Number | SN23SST |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
