Viper FCDC-KIT#4 Unassembled 2-Disk Clutch - Solid Blue Drum - 3/4" BoreDominate your next racing weekend with the Viper FCDC KIT#4 Unassembled Two Disk Clutch, engineered for unyielding torque and bulletproof reliability. In a sport where split second decisions and mechanical dependability separate the champions from the pack, your drive line components must perform flawlessly under extreme stress. Unlike a standard go kart clutch that fades or slips under heavy loads, this unassembled Viper kit allows you to custom tune