The Twister big block camshaft is a high-performance grind, providing significant power increase over the stock cam at a great price.

Developed on the dyno and the track to maximize power on GX270, GX390, 420cc Predators, and 13/15hp Chinese OHV engines.

Stock lift with increased duration and optimized valve timing for a wide powerband (2000-5000+ rpm), providing a drastic improvement throughout the entire RPM range.

This cam is easy on the valve train and will not "beat up" your valves or lifters.

Recommended for yard karts, mud motors, short track go-karts, marine, pulling/towing, mini bikes, and anything else where a broad powerband is necessary and loss of low end is unacceptable. Also great for racing classes that require stock lift.

Cams are cut on a close base circle to the stock cam so that the compression release is still functional.

HD "Blue Stripe" Valve Springs Included

246 Duration, .260" Lift using stock rocker arms (.250 at lobe), 110 LSA (ICL varies, depending on the engine in which it's installed.