History and information about SPEC Clutch and their products.
LMPerformance offers the SPEC Clutch line of clutch and flywheels. 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.
SPEC billet flywheels are manufactured and developed for specific driving environments and recommended based on application.
IMPORTANT NOTE: Items on this page are for definition purposes only. These descriptions are to help explain the differences in the Stages available. Please note that your specific application may vary. Not all kits come with bearings and may or may not come with a sprung hub.
LMPerformance listing of SPEC products feature Clutch Kits From street kit Stage 1,2,2+, 3, and 3+ to Race Kits Stage 4 and 5 as follows:
Stage 1: Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross
Features an integrally molded carbon kevlar-based, high performance organic lining that offers smooth engagement and excellent life. Best for street and many track/off-road applications.
Stage 2: Street, Drag, Pulling, Autocross
Features segmented or full faced pure Kevlar disc with steel backing. This lining features excellent drivability like the stage 1, but offers slightly longer life and higher torque capacity.Best for street, drag, pulling and autocross.
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 is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Great for street, drag, autocross, road racing, pulling, rallye and drift.
Stage 3: Street, Drag, Pulling, Autocross
Features a carbon semi-metallic 6 puck sprung or unsprung hub disc that has been the leading puck clutch in drivability, life and torque capacity. This unit is designed for street and race cars that require an aggressive but streetable engagement and high torque capacity. (sprung version) The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Also available in 3 puck configuration. Great for street, drag, road racing, pulling, rallye and drift.
Stage 3+: Street, Drag, Pulling, Autocross
The flagship stage for a high powered street or race car that requires a manageable and friendly engagement, the stage 3+ features a carbon semi-metallic full faced material that offers unparalleled life, friction co-efficient and drivability characteristics in one single package. The hub is double sprung with spring cover relieves for flexibility and heat treated components for strength and durability. Great for street, drag, drift, autocross, road racing, pulling, rallye and drift.
Stage 4: Street, Drag, Pulling, Autocross
This unit is a solid hub version of the stage 3. The hub is solid 8-rivet and the assembly is heat treated for strength and durability. It is available in a 3, 4 or 6 puck configuration. Use the 3 puck for the lightest option or the 6 puck for the smoothest engagement. The 4 puck is a good compromise for both. Street drivable in 6 puck configuration, but not street friendly due to the rigid hub. Best for drag racing, road racing, pulling, rallye and drift.
Stage 5: Street, Drag, Pulling, Autocross
Features a full-metallic disc with the highest possible friction co-efficient. Street drivable but not street-friendly. Best for extreme street and drag racing.
The Super Twin is for street and track use with extreme horsepower and torque (700-1500 ft lbs tq). offering near-stock drivability, tremendous life expectancy, a no shimming/setup bolt-in install and maintenance free operation. With all billet construction, these units are smooth and quiet.Rebuild-able by SPEC or the end user and replacement components. The super twin is constructed of aircraft grade aluminum and high carbon billet steel. Friction is provided by dampened, full-faced carbon graphite, Organic, fiber and full metallic options are available. Flywheel and track-spec hardware are included.
Street, Drag, Pulling, Autocross
Multi-disc clutch and flywheel assemblies for limited street, drag race and road race applications. The Mini Twin assemblies are available in different clutch disc and flywheel materials, clamp loads, disc configurations and diameters which are recommended based on the type of usage the vehicle demands. The units are rebuild-able by SPEC or the end user. Types of driving: limited street, drag, drift, road racing, time attack, pulling and rallye.
Please note that some applications require a SOLID hub such as some stock flywheel appications. If you need a sprung hub then please specify this on our order form.
Important Contact, Policy and Warranty information (if available) will be listed below for SPEC Clutch.
SPEC Clutch Phone Support: 1-205-491-858
SPEC Clutch's Website: http://www.specclutch.com/