This is the Replacement Inner Clutch for the 2-speed used on the Maximum Pro"s. / This is located on the spur gear shaft and inserts into the clutch / drum, and then the brake disk mounts onto it. / / FEATURES: Aluminum construction / Expanding disk installed w/set screw / / INCLUDES: One aluminum inner clutch / / REQUIRES: Assembly onto a Maximum ST or MT Pro kit. / jim 12/6/00 / ir/jl