K&N Universal Clamp-On Air Filter – 20° Angled Flange | Washable Cotton Gauze Performance Filter RU-171

Improve airflow and boost performance with the K&N Universal Air Filter (Part No. RU-171). Designed for a wide range of street bikes, ATVs, UTVs, and off-road vehicles, this 20° angled clamp-on filter replaces your stock airbox for increased horsepower and throttle response.

Made from high-flow washable cotton gauze, the RU-171 offers superior filtration and long-lasting performance. Simply clean, re-oil, and reuse — no need for frequent replacements.

Key Features:

• Universal clamp-on design fits directly to the carburetor or intake tube

• Angled 20° flange for flexible fitment in tight spaces

• Increases airflow for improved engine performance

• Washable & reusable cotton gauze filter media

• Durable black rubber flange and red cotton element

• Replaces stock airbox and paper filters

• Perfect for street, snow, ATV, UTV, and off-road applications

Specifications:

• Product Name: Air Filter

• Model: Universal

• Style: Clamp-On

• Shape: Round

• Inside Diameter: 57 mm (2.24")

• Filter Height: 5.00"

• Flange Angle: 20°

• Filter Media: Cotton Gauze

• Color/Finish: Black / Red

• Units: Each

• Riding Style: Street / Snow / UTV / ATV / Off-Road

Boost your engine’s efficiency and longevity with the K&N RU-171 Universal Air Filter — the trusted choice for riders and tuners looking for maximum airflow and easy maintenance.