LEADING ENGINE COOLING PERFORMANCE

Boyesen is the world leader in ATV Performance Engine Components including our innovative Supercooler Kit. Keeping internal engine temperatures low will allow your ATV to produce more horsepower and MAINTAIN it for the duration of hot summer riding, or in low air-flow, muddy conditions. The Boyesen Supercooler is the best bolt-on solution for rider's looking to reduce coolant temps, optimize horsepower and extend the lifespan of an engine’s internal valve-train components. Our Supercooler kits are available for a wide range of ATVs including Honda TRX 450, kawasaki KFX 450, Suzuki LTR 450, and the widely praised Yamaha YFZ450.