The Outerwears ATV Pre-Filter, Part Number 20-1800-01, is designed to help protect compatible Uni 4720 air filters from sand, dirt, clay, water, and other unwanted elements. Its silicone-impregnated micro-mesh construction is water resistant while maintaining airflow for dependable engine performance in demanding riding conditions.
Dyno and flow bench testing has shown no significant loss of horsepower or air intake when using this pre-filter. The material contains uniform micron-sized openings that allow air to pass through while filtering particles as small as .005 inches in diameter without noticeable airflow restriction. Dielectrically welded seams provide a durable, secure construction for off-road use.
Fitment: This Outerwears pre-filter fits 2001–2005 Yamaha YFM660R Raptor ATV models equipped with a Uni 4720 air filter. Verify the air filter model and application before installation. The pre-filter is intended to be installed over the compatible air filter to provide an additional layer of protection in dusty, wet, and sandy environments.
Features:
- Airflow Performance: Dyno and flow bench testing has shown no significant loss of horsepower or air intake when using this pre-filter.
- Water Resistance: Silicone-impregnated micro-mesh helps resist water penetration.
- Durable Construction: Dielectrically welded seams provide a secure and reliable design.
- Particle Filtration: Uniform micron-sized openings filter sand, dirt, clay, water, and other unwanted elements.
- Fine Filtration: Filters particles as small as .005 inches in diameter without noticeable airflow restriction.
- Fitment: Fits 2001–2005 Yamaha YFM660R Raptor ATV models with a Uni 4720 air filter.
- Brand: Outerwears.
- Manufacturer Part Number: 20-1800-01.
Fitment:
2001 Yamaha YFM660R Raptor
2002 Yamaha YFM660R Raptor
2003 Yamaha YFM660R Raptor
2004 Yamaha YFM660R Raptor
2005 Yamaha YFM660R Raptor