Spec stage 4 clutches are basically a solid hub version of the stage 3 clutch. 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.

The spec stage 4 clutch is a built-to-order item; please indicate 3, 4, or 6 puck when ordering.

General Fitment

The spec stage 5 clutch is their most aggressive and strongest clutch. It 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.

The spec 5 clutch is best for extreme street and drag racing.

General Fitment

Spec stage 5 clutch Porsche Boxster 2.7l 5 speed 00-08

What good is more horsepower if it isn_t transferred to the ground? The clutch is the main link between the power your engine produces and the transmission, but all too often it is also the weak link. Many stock clutches simply will not last under harsh driving conditions or continual hard launches. When a car is making more horsepower than stock the factory clutch is under even more strain. This can cause premature clutch wear and costly repair bills. Spec clutch solves this problem with their line of performance clutches. With increased surface area spec clutches give your transmission more _bite_ while increasing reliability and performance.
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General Fitment

What good is more horsepower if it isn't transferred to the ground? The clutch is the main link between the power your engine produces and the transmission, but all too often it is also the weak link. Many stock clutches simply will not last under harsh driving conditions or continual hard launches. When a car is making more horsepower than stock the factory clutch is under even more strain. This can cause premature clutch wear and costly repair bills. Spec clutch solves this problem with their line of performance clutches. With increased surface area spec clutches give your transmission more 'bite' while increasing reliability and performance.

Applications: street, drag, pulling, autocross. This uni...(choose a part on the right to read more)

General Fitment

Porsche 911 ac compressor upgrade kit, 1984-89, lh drive model provides improved integrity with our kuehl barrier hose set, kuehl low- high pressure switch to help protect the system, a new denso factory compressor with clutch, new kuehl drier, complete o-ring kit, along with r134a charge port adapters. you can use either r12 or r134a with refrigerant with this complete kit. all barrier hoses match OEM configuration, have sae sae approved crimped fittings and each hose is labeled so you know where it goes.

Fits these applications

lh drive models
Porsche 911 non-turbo, 1984-1989 (pre 964 model)
coupe, cabriolets, and turbo look bodies.
with factory installed ac

Includes

new...(choose a part on the right to read more)