The Centerforce ® I Clutch Series is designed as a high-quality entry-level performance clutch for those in need of a superior stock replacement. Using the patented Centerforce centrifugal weights (where applicable) and premium friction materials, the Centerforce Stage 1 clutch system is perfect for applications with stock engines or mild power increases from minor bolt-on modifications. • Patented centrifugal weight design (where applicable) • Light pedal effort • High quality friction material • Smooth engagement