New low-profile design fits under stock primary cover. Low-profile design fits under stock primary cover. Direct bolt-on design retro-fits to existing Scorpion billet clutches. Direct bolt-on design retro-fits to existing Scorpion billet clutches. Progressively increases pressure as rpm increases. Progressively increases pressure as rpm increases. CNC-machined, 6061 T-6 billet aluminum. Perfect for large-displacement, high-horsepower motors. Perfect for large-displacement, high-horsepower motors. Made in the U.S.A.. Made in the U.S.A..