|Heat is killing your KTM 4-stroke. These machines runs HARD and runs HOT; Boyesens SuperCooler™ kit for the KTM 250/350 uses a patented impeller design to protect vulnerable engine components. A 26% flow increase over stock lets you run cooler, run faster and moto longer. More flow means supercooled engine protection and maximum horsepower!
With over 40 years in high performance engineering and manufacturing, Boyesen has produced an all-new water pump/impeller kit for the 12-14 based KTM450 and 500 models. The Boyesen SuperCooler water pump kit is an aluminum investment cast cover and impeller combo; specifically designed to enhance the performance and durability of your engines cooling system. This high flow, hydrodynamic water pump kit has been tested and designed to flow more coolant. By increasing the flow, the engine will run cooler at a more constant temperature.
Part 4901148 fits the following machines