FLY SYSTEM 107mm System includes the famous: Reinforced clutch for extreme use (Fly Clutch. And in addition, DC04 steel clutch bell dynamically balanced.

DELTA SYSTEM Centrifugal clutch system with a clutch bell for RACING use. System includes the famous patented adjustable clutch (Delta clutch). In addition, the reinforced, anti-failure clutch bell (Wing Clutch Bell) with cooling fins, dynamically balanced, is designed for competitive and sport applications.