**Built-To-Order. Please email and confirm delivery ETA before ordering** The CNC Menace90 SS Ultimate Stroke Engine! Upgrades: 52mm Bore x 42mm Stroke Ported Menace Cylinder CNC Case CNC Smolik Head CNC 1.65" Front Mount CNC 1.25" Rear Mount BTG Clutch CNC Covers Balanced Stroker Crank PGN 6302 Bearings Viton Crank Seals 32mm Spigot Style Intake Specifications: Displacement: 90cc Bore: 52mm Stroke: 42mm Cylinder Material: Aluminum Nikasil HP: 10-12 hp Torque: 6-6.5 ft-lbs Peak RPM: 10,500-11,500 Top Speed: 55+ mph Oil Ratio: 32:1 Synthetic Does not include standard kit parts or pipe 30 Day Limited Engine Warranty Important Notes Mounts are designed to fit Felt-Faker style frames (may fit others as well) All engines are shipped with large squish (1.0-1.4mm) to ensure safety when first tuning. You may adjust squish for increased power but be aware this will cause extra wear and tear on the bottom end. DO NOT go below 0.8mm squish. Recommend Spark Plug: NGK BR8HS
