Powermaster Ultra High-Speed Starters are rated up to 15:1 compression and 200 ft/lbs of cranking torque. Ideal for blown alcohol, magneto equipped, or engines that require higher than normal cranking speed. Perfect for 12 or 16 volt systems delivering 25% more cranking speed and fewer engine kickbacks. All Powermaster starters come with their dyno-tested proof of performance guarantee. Made in USA.