The Pro R TAPP Secondary Clutch comes fully assembled with a 44-degree helix, secondary spring
Spring options are listed below select the one that fits your application correctly:
Orange Spring is rate for 135-350hp
Red Spring is rate for 350-650hp
The Tapp secondary is designed to work with NA/TURBO Pro R's. If you're hitting the trails or the track Tapp Clutch will get you dialed in. We offer a variety of helix inserts and 2 spring options to create the perfect match for your ride.
The Tapp Secondary features:
- Oversize Helix Diameter: Maximizes the clamping force on the belt. One of the largest issues with existing designs is that a small hub limits both the spring coil diameter as well as the maximum force the helix can apply to the belt. Big horsepower cars no longer have to run a double spring.
- Larger Helix Surface: Allows the use of wider rollers that can better distribute the tremendous loads they experience. This is especially true under drag race conditions.
- Replaceable Helix Ramps: TAPP has engineered an elegant solution so only parts of the helix ramps need to be changed when you want to change helix angles.
- Torsionally Adjustable Spring Tension: The design utilizes a torsional style helix cap with adjustable slots which allow the spring torsional tension to be used as a tuning feature.
- Unmatched Performance: All of these design features add up to power, performance and longer belt life. At the 400 wheel horsepower level, it gained 15-20 horsepower to the wheels. Whether you are trail riding, dunning or racing, belt life will be extended when using a properly calibrated TAPP Clutch.