Collection: Horstman MDC Clutch Parts

13 Horstman MDC Clutch Parts - Scroll Down

MDC is Horstman’s kart clutch family; this category covers its service parts, including 4-spring lever supports, stock black and modified red springs, clutch keys, #35 chain drums in 13–16 tooth sizes, and outboard mounting kits. Centrifugal clutches of this type use spring rate and shoe/lever geometry so engagement speed rises as engine RPM increases, without a hand-operated clutch lever.