K&N RU-3190 Universal Clamp-On Round Air Filter 2.75in 20-Degree Flange 4in OD 6

Vehicle Fitment

• Universal Fit - Designed for motorcycles, ATVs, powersports vehicles, racing builds, and any application with a 2.75 in. intake requiring a compact clamp-on round filter with a steeply angled flange

Fitment Notes

• This filter features a 20-degree angled flange - designed for significantly offset or angled intake configurations where a straight or shallower-angle flange will not seat properly
• Verify your intake tube outside diameter matches the flange inside diameter of 2.75 in. before purchasing
• Rubber flange can be stretched up to 1/16 in. (1.5 mm) to accommodate in-between sizes
• Not a direct OEM replacement for a specific vehicle - confirm fitment by measuring your intake tube diameter and angle

Features

• Multi-layer oiled cotton gauze media delivers up to 50% more airflow than standard paper filters
• 20-degree angled flange engineered for significantly offset and angled intake applications
• Round straight design provides consistent filter surface area across the full 6-inch height
• Ultra-strong molded pliable rubber flange absorbs vibration and provides a secure, leak-free attachment
• Washable and reusable - engineered to last the lifetime of your build or vehicle
• Pre-oiled and ready to install straight out of the box
• Made in the USA
• Backed by K&N's 10-Year/Million Mile Limited Warranty

Specifications

• Shape: Round Straight
• Flange Inside Diameter: 2.75 in. (70 mm)
• Flange Angle: 20 degrees
• Flange Length: 2.00 in. (51 mm)
• Flange Type: Centered (Single)
• Outside Diameter: 4.00 in. (102 mm)
• Height: 6.00 in. (152 mm)
• Filter Material: Multi-layer oiled cotton gauze
• Filter Color: Red
• Top Style: Rubber End Cap
• Inner Wire: No

Included Components

• 1x K&N RU-3190 Universal Clamp-On Round Straight Air Filter

Product Description

The K&N RU-3190 is a high-flow universal clamp-on round straight air filter specifically engineered for significantly offset and angled intake applications. Its 20-degree angled flange allows it to seat correctly on intake tubes positioned at a steep angle where standard straight or shallowly angled flanges would not align properly - making it ideal for motorcycles, ATVs, scooters, and custom builds where carburetor or intake positioning is sharply inclined. The multi-layer oiled cotton gauze construction flows significantly more air than stock paper elements, delivering improved throttle response and horsepower gains.

The 2.75 in. rubber flange mounts securely onto matching intake tubes, absorbs vibration, and can be stretched slightly to fit in-between sizes. Its consistent 4-inch OD and 6-inch straight height make it a practical upgrade for confined or angled intake setups. Washable and reusable, the RU-3190 arrives pre-oiled and is ready to install out of the box. It is backed by K&N's 10-Year/Million Mile Limited Warranty and made in the USA.