K&N YA-4518XD High-Flow Motorcycle Air Filter - Yamaha YZ450F / YZ250F / WR450F / YZ450FX (2018-2023)

Vehicle Fitment

• 2018-2020 Yamaha YZ450F (449cc)
• 2019-2023 Yamaha YZ250F (250cc)
• 2019-2020 Yamaha WR450F (450cc)
• 2019-2020 Yamaha YZ450FX (449cc)

Features

• High-flow multi-pleat cotton gauze media for increased airflow and performance
• Washable & reusable construction for long service life
• Pre-oiled and ready to install out of the box
• Includes foam pre-filter option for dusty/off-road conditions
• Application-specific sealing bead for direct OEM airbox fitment
• Large surface area and pleated design for extended service intervals
• Maintains clean carburation even at altitude
• 1-year limited manufacturer warranty

Specifications

• Filter Shape: Panel / Trapezoidal
• Media: Cotton gauze (multi-layer pleated)
• Washable / Reusable: Yes
• Outside Length: 7.688 in (195 mm)
• Outside Width: 7.438 in (189 mm)
• Height: 1.438 in (37 mm)
• Filter re-oil amount (service): ~0.83 oz (24 ml)
• Package Contents: 1x Air Filter (pre-oiled)

Included Components

• 1x K&N YA-4518XD Air Filter (pre-oiled)
• 1x Instruction sheet (service & installation)

Product Description

The K&N YA-4518XD is a high-flow replacement air filter engineered for Yamaha off-road and motocross models. By replacing restrictive factory paper elements with pleated cotton gauze media, the YA-4518XD increases airflow to the engine for improved throttle response and potential performance gains while still providing excellent particle filtration for demanding off-road conditions.

Designed for direct drop-in fitment into the OEM airbox with an application-specific sealing bead, installation requires no modification. The filter ships pre-oiled and ready to install. When service is required, simply clean the element with K&N cleaner, allow to dry, and re-oil per the instructions - a cost-effective alternative to repeated disposable filter replacements.