The OUTERWEARS ATV Pre-Filter is designed for use with K&N HA-4099 air filters and helps provide an additional layer of protection against common off-road contaminants. This red pre-filter uses silicone-impregnated micro-mesh material to help resist water while filtering unwanted elements such as sand, dirt, clay, and moisture before they reach the primary air filter.
Dyno and flow bench testing has shown no significant loss of horsepower or air intake when using this product. The material features uniform micron-sized openings that promote airflow while filtering particles as small as .005 inches in diameter without noticeable airflow restriction. Dielectrically welded seams help provide consistent construction and reliable coverage during demanding riding conditions.
Fitment includes 2012–2014 Honda TRX400X and 1999–2005 Honda TRX400EX Sportrax models. Verify the existing air filter application before installation to confirm compatibility with the K&N HA-4099 filter. This product is manufactured by OUTERWEARS and is identified by manufacturer part number 20-1008-03 and vendor part number 25-5822R.
Features:
- Compatibility: Designed to fit K&N HA-4099 air filters.
- Material: Silicone-impregnated micro-mesh is water resistant.
- Filtration: Filters particles as small as .005 inches in diameter.
- Airflow: Helps maintain airflow without noticeable restriction or significant horsepower loss.
- Construction: Dielectrically welded seams provide durable, consistent coverage.
- Protection: Helps filter sand, dirt, clay, and water before they reach the primary air filter.
- Fitment: Fits 2012–2014 Honda TRX400X and 1999–2005 Honda TRX400EX Sportrax models.
- Identification: OUTERWEARS manufacturer part number 20-1008-03; vendor part number 25-5822R.
Fitment:
1999 Honda TRX400EX Sportrax
2000 Honda TRX400EX Sportrax
2001 Honda TRX400EX Sportrax
2002 Honda TRX400EX Sportrax
2003 Honda TRX400EX Sportrax
2004 Honda TRX400EX Sportrax
2005 Honda TRX400EX Sportrax
2006 Honda TRX400EX Sportrax
2007 Honda TRX400EX Sportrax
2008 Honda TRX400EX Sportrax
2009 Honda TRX400EX Sportrax
2012 Honda TRX400X
2013 Honda TRX400X
2014 Honda TRX400X