SPEC

spec-logo

Spec clutches and flywheels are manufactured using the most advanced methods under the strictest tolerances. Spec is committed to making the very finest parts is at the core of what they stand for as a company and don’t accept anything less.

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. This lining has integrally bonded steel backing for strength under high clamp loads and temperatures. The hub is double sprung with spring cover relieves for flexibility and heat-treated components for strength and durability. Best for street and many track/off-road applications.

  • High clamp pressure plate
  • Steel-backed and multi-compound woven organic material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit

stage-1

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. The hub is double sprung with spring cover relieves for flexibility and heat-treated components for strength and durability. Best for street, drag, pulling and autocross.

  • High clamp pressure plate
  • Pure Kevlar friction material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit

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.

  • High clamp pressure plate
  • Hybrid Kevlar and Carbon-Graphite Friction material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit

STAGE 3 – STREET, DRAG, PULLING, AUTOCROSS
Features a carbon semi-metallic 6 puck sprung hub disc that has been the leading puck clutch in drivability, life and torque capacity. This unit is designed for street and racecars that require an aggressive but streetable engagement and high torque capacity. 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.

  • High clamp pressure plate
  • Carbon-Graphite Friction Material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit

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, rally and drift.

  • High clamp pressure plate
  • Carbon semi-metallic friction material
  • High torque sprung hub and disc assembly
  • Bearing and tool kit

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 pucks for the lightest option or the 6 puck for the smoothest engagement. The 4 pucks 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.

  • High clamp pressure plate
  • Carbon-Graphite Friction Material
  • High torque solid hub and disc assembly
  • Bearing and tool kit

STAGE 5 – STREET, DRAG, PULLING, AUTOCROSS
Features a full-metallic disc with the highest possible friction co-efficient. Street drivable but not street-friendly. The hub is solid 12-rivet and the assembly is heat treated for strength and durability. Best for Extreme Street and drag racing.

  • High clamp pressure plate
  • Full-metallic friction material
  • High torque solid hub and disc assembly
  • Bearing and tool kit

SUPER TWIN
The Super Twin is for street and track use in cars with extreme horsepower and torque (700-1500 ft lbs tq). The Super Twin offers near-stock drivability, tremendous life expectancy, a no shimming/setup bolt-in installation and maintenance free operation. With all billet construction, these units are smooth and quiet. The units are rebuild-able by SPEC or the end user and replacement components or rebuild services are always available. The super twin is constructed with aircraft grade aluminum and high carbon billet steel milled to an industry leading .001 inch for perfect balance and actuation. Dampened, full-faced carbon graphite discs provide friction. Organic, fiber and full metallic options are available. Flywheel and track-spec hardware are included in each kit. Types of driving: street, drag, drift, road racing, time attack, pulling and rally.

supertwin

MINI TWIN – 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 and replacement components or rebuild services are always available. SPEC manufactures to an industry leading one thousandth of an inch for perfect rotational properties and concentric actuation, which optimizes balance, drivability and life. Types of driving: limited street, drag, drift, road racing, time attack, pulling and rally.

SPEC billet flywheels are manufactured and developed for specific driving environments and recommended based on how each car reacts to changes in rotating mass. SPEC flywheels are NOT a one-fits-all lightweight flywheel, though they can be used for an array of driving habits and racing/high performance applications. Consult a SPEC representative for a recommendation. Manufactured from only the highest quality steel and aluminum, they are the only flywheels on the market manufactured to a .001 machine tolerance, guaranteeing a flat seating surface for the clutch and smooth rotational qualities for perfect balance and extended engine life.

ALUMINUM
Stock appearing aluminum pressure plates allow for quicker revs, more horsepower and increased engine reliability. These pressure plates are a great addition to SPEC lightweight flywheels or factory flywheels, and can be used with a variety of friction discs.

SUPER CLAMP
SPEC Super Clamp pressure plates have extreme clamp loads that are beyond what is offered in the standard high clamp kit. These pressure plates will provide a marginally higher pedal requirement, but are engineered to have reasonable drivability and not be a detriment to the car’s release system. Expect a 50-60% increase in clamp load above and beyond the increase offered by our standard high clamp pressure plate.

superclamp

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