All Race discs are certified as meeting SFI® Specification 1.1 and are legal in all racing organizations that require SFI® Certification.
PREMIUM CERAMIC MATERIAL
Premium ceramic friction materials provide high heat tolerance, high coefficient of friction (µ) and low wear rates.
HEATED TREATED HIGH-CARBON SPRING STEEL
All drive plates are made from high-carbon spring steel, then heat-treated and zinc-plated to resist bending, cracking, fatigue and corrosion under the most severe racing conditions.
ACT spring retainers are designed with wrap-around spring windows to provide additional support and reduce stress concentrations, which eliminate common causes of failure. These improved retainers are found on most ACT Modified and Performance street discs.
HEAVY DUTY TORSIONAL DAMPER SPRINGS
Heavy duty torsional damper springs are typically stronger than standard springs and are engineered to suit each application.
PRECISION BROACHED SPLINES
Precision-broached splines ensure an exact fit onto the transmission input shaft for long spline life and better clutch release.
Thicker retainer stampings for improved strength and reliability.
Disc components are manufactured using precision stampings from dedicated tooling, allowing the highest quality and consistency.
IMPROVED CLUTCH LIFE & REDUCED NOISE
Most ACT spring-centered assemblies use bushings and cone or wave springs, similar to factory clutch discs. This creates frictional damping to improve clutch life and reduce noise.
TOP GRADE RIVETS
Top grade rivets, carefully selected for maximum strength and toughness, are used to securely fasten the disc assembly.