Introducing the MHP 143 Dominator – Moonshine Horsepower’s 143 Cubic Inch M8 Engine Build, crafted for riders who live for raw power and believe there’s no substitute for massive displacement. This beast churns out unrivaled torque and horsepower, thanks to its colossal cubes. We go all-in with oversized 4.500″ MHP Monster Cylinders matched to a commanding 4.500″ stroke, delivering a powerhouse that demands precision-bored engine cases to house our massive cylinders. Featuring centrifugally cast ductile iron sleeves from Darton Sleeves and extended spigots for rock-solid piston stability, the larger bore unshrouds the intake valves for explosive airflow. Our MHP Monster Heads, equipped with oversized +2.5mm intake valves and square ports, unleash relentless flow, paired perfectly with our Monster CNC intake manifold. This build is for the rider itching to dominate the racetrack, rule the streets untouchably, or just humble some metric street bikes with ease.

Check out our dyno sheets below to find the ideal camshaft and exhaust setup for your ride – because the MHP 143 Dominator doesn’t just ride, it conquers.