K&N Powersports Cartridge Oil Filters are designed to satisfy the needs of racers and engine builders as well as the average motorcycle or ATV owner who wants the best oil filter available. K&N cartridge oil filters trap harmful contaminants while the filter's construction allows for high oil flow rates. K&N Oil Filters are covered by a limited warranty to be free from defects in materials and workmanship when installed and replaced using engine and equipment manufacturer's recommended service intervals. K&N Performance Motorcycle Oil Filters are constructed of resin-impregnated synthetic media, meaning high flow rate and outstanding filtration. When you push your motorcycle to its limits, take comfort in knowing the K&N Performance Oil Filter is keeping up with your engine by allowing greater flow rate. Large, uniform pleated synthetic filter media provides high flow rates and outstanding filtration - traps 99% of harmful contaminants.