K&N RC-1824 Universal Clamp-On Oval Air Filter (2" Flange, 4" x 2.72" Base)

Vehicle Fitment

• Universal - clamp-on filter for custom intakes, aftermarket airboxes, racing, off-road, or non-OEM applications

Fitment Notes

• Requires intake tube or carb flange with ~2.00 in (51 mm) inner diameter
• Not intended as a direct OEM airbox replacement - verify flange size and clearance before installation
• Often used for motorcycles, ATVs, UTVs, or custom intake setups

Features

• High-flow cotton gauze media for enhanced airflow and engine breathing
• Pleated multi-layer construction offering large filtration surface and low restriction
• Washable and reusable - reduces long-term maintenance costs
• Pre-oiled and ready to install out of the box
• Flexible molded rubber flange for secure clamp-on fit and vibration absorption
• Oval tapered design - compact profile suitable for tight engine-bay or custom layout
• Improved throttle response and potential power/acceleration gains when paired with appropriate tuning
• Durable build designed for racing, off-road, or high-demand environments

Specifications

• Filter Shape: Oval tapered / straight clamp-on
• Base Outside Length: 4.00 in (102 mm)
• Base Outside Width: 2.719 in (69 mm)
• Flange Inside Diameter: 2.00 in (51 mm)
• Flange Length: 0.625 in (16 mm)
• Flange Type: Offset molded rubber flange
• Height: 2.75 in (70 mm)
• Filter Material: Cotton gauze (washable & reusable)
• Top Outside Length: 3.00 in (76 mm)
• Top Outside Width: ~2.00 in (51 mm)
• Package Quantity: 4 air filters per box (each sold as a clamp-on unit)
• Warranty: 1-Year Limited Warranty

Included Components

• 1x RC-1824 universal clamp-on air filter (pre-oiled, ready to install)

Product Description

The RC-1824 from K&N is a universal clamp-on air filter engineered for custom intake systems, motorcycles, ATVs, UTVs, off-road machines, and other applications where a standard airbox is not used. Its compact oval-tapered design and flexible rubber flange allow for easy installation on a 2.00" intake tube, even in tight or non-standard engine-bay configurations. The pleated cotton-gauze media delivers a large filtration surface for high airflow and effective filtration, helping engines breathe more efficiently under demanding conditions.

Because the filter is washable, reusable, and pre-oiled out of the box, the RC-1824 offers long-term durability and convenience compared to disposable filters. The molded rubber flange ensures a secure seal and vibration resistance - especially valuable for off-road or racing environments. Overall, this universal clamp-on filter is a flexible, high-flow solution for anyone building custom intakes or needing a reliable aftermarket air filter that balances performance, filtration, and reusability.