Arlen Ness Oval Stage II Air Cleaner - 600-197 For Harley Motorcycles 2017-2025 Brand_Technoresearch Rotor has a 11-4/5" diameter

Rotor has a 11-4/5" diameter and a thicker than standard 11/40" thickness

Stabilizes ethanol and gasoline mixtures

Dyno proven and track tested

Sportsman 850 Ultimate and 1000 XP require OEM bumper

Arlen Ness Oval Stage II Air Cleaner - 600-197 For Harley Motorcycles 2017-2025 Brand_Technoresearch Rotor has a 11-4/5" diameterFeatures Open face filter design for maximum airflow Performance black pre oiled air filter features a high flow pleated top and pleated perimeter to take in airflow from all directions resulting in increased performance Air filter is washable and reuseable Low profile design for ample legroom Radius design backing plate engineered for horsepower and torque through unobstructed airflow Kit Includes: One backing plate assembly One air filter One outer