Torque Recommendations (Measured at the Flywheel):
| Stage 1 | Stage 2 | Stage 2+ | Stage 3 | Stage 3+ | Stage 4 | Stage 5 | |
| Kit Part Number: | SD841 | SD842 | SD843H | SD843 | SD843F | SD844 | SD845 |
| Torque Capacity: | 310 | 400 | 450 | 530 | 600 | 530 | 695 |
Stages 1-3+ recommended for street/strip Stages 4-5 Race only.
* Clutch Kit Notes: Kit includes oe cast steel flywheel. When purchasing a kit with the billet steel or billet aluminum flywheel, factory flexplate assembly is eliminated, reducing weight and increasing high rpm integrity. Call about our new billet, SFI certified 2600psi pressure plate option.
About SPEC Clutch: SPEC is a Manufacturer of street high performance and racing clutches and flywheels. Featuring Clutch Kits From street kit Stage 1, 2, 2+, 3, and 3+ to Race Kits Stage 4 and 5. And now the SPEC Super Twin with TQ ratings of over 1500 FT TQ ! Every SPEC Clutch Kit and Flywheel has been SFI Approved.
Additional Stage 2+: Street, Drag, Pulling, Autocross
Features a multi-friction disc in a full faced configuration with carbon semi-metallic on one side and Kevlar on the other. Bridging the gap between stage 2 and stage 3, the 2+ offers drivability and engagement quality characteristic of the stage 2, but with a 15-20% higher torque capacity. The hub comes in either Sprung or Rigid and is application dependant. The double sprung hud features spring cover relieves for flexibility and both hubs use heat treated components for strength and durability. Great for street, drag, autocross, road racing, pulling, rallye and drift.
ADDITIONAL INFORMATION
American Muscle is Alive and Well at Lightning Force Performance! LFP is the only place to find the lowest prices on performance parts for your muscle car. LFP Started back in 2000 designing and developing parts for the Ford SVT Lightning.