Performance Engine Components


Boyesen is the world leader in Powersport Performance Engine Components including our innovative high performance water pump system, the Supercooler Kit. Keeping internal engine temperatures low will allow your Karting engine to produce more horsepower and MAINTAIN it for the duration of hot summer races or any scenario where your engine is running hot. The Boyesen Supercooler is a proven race component, and is the best bolt-on solution for you if you are looking to reduce coolant temps, optimize horsepower and extend the lifespan of an engine’s internal components. Boyesen Supercooler kits are available for your Karting Honda CR 125, Honda CR 250, or Yamaha YZ 125 and Yamaha YZ 250 engines.