HEAT IS THE #1 ENEMY OF 4-STROKE ENGINE PERFORMANCE* ENHANCED ENGINE COOLING SYSTEM The patented Boyesen design increases water flow, reduces hydraulic friction and cavitation, so your engine can run as much as 10 F cooler. FEATURES: Seamless hydrodynamic design Increases coolant flow at all RPMs Reduces cavitation and hydraulic friction High capacity inlets Patented nautilus style impeller Extends engine life * WIN THE WAR ON HEAT, BOLT ON A SUPERCOOLER NOW* "My YZ450F over heated sometimes in the nasty stuff. I installed the SuperCooler kit and have not had a problem since. It works great and is not just bling for your bike, worth the money if running hot is an issue." - Jordan See dirtrider.com test here