Uni Filter 98-99 Polaris Big Boss 500 / 95-99 Magnum (Oval) / 96-02 Scrambler 400 Air Filter - NU-8502ST

For over 50 years, Uni Foam Air Filters have been unsurpassed in both engine protection and overall performance. Their unique two-stage design produces more horsepower and more torque than any other air filter for your ATV.