The Outerwears Pre-Filter Nu 3230ST is designed to provide an additional layer of protection for compatible motorcycle air filters while maintaining efficient airflow. Its silicone-impregnated micro-mesh material is water resistant and helps defend against sand, dirt, clay, and water without creating a noticeable loss of intake performance. Dyno and flow bench testing has shown no significant horsepower or airflow loss when this pre-filter is used.
Uniform micron-sized openings filter particles as small as 0.005 inches in diameter while allowing air to pass through the intake system. The seams are dielectrically welded to support a secure, durable construction in demanding riding environments. This pre-filter is a practical choice for riders who need added protection from off-road debris and moisture while preserving engine airflow.
Outerwears Pre-Filter Nu 3230ST, manufacturer part number and vendor part number 20-1258-01, fits select Yamaha and Honda applications. Fitment includes the 2016 and 2017 Yamaha YZ250X, along with Honda CR125R models from 1979, 1980, and 1984 through 1989. Confirm the motorcycle model and year before installation to ensure proper fit.
Features:
- Performance: Dyno and flow bench testing shows no significant loss of horsepower or intake airflow.
- Water Resistance: Silicone-impregnated micro-mesh helps resist water intrusion.
- Construction: Dielectrically welded seams provide durable, secure assembly.
- Filtration: Uniform micron-sized openings help filter sand, dirt, clay, and water.
- Fine Particle Protection: Filters particles as small as 0.005 inches without noticeable airflow restriction.
- Fitment: Fits 2016 and 2017 Yamaha YZ250X models and 1979, 1980, and 1984–1989 Honda CR125R models.
- Identification: Outerwears Nu 3230ST, part number 20-1258-01.
Fitment:
1974 Yamaha YZ125
1974 Yamaha YZ250
1975 Yamaha YZ125
1975 Yamaha YZ250
1976 Yamaha YZ125
1976 Yamaha YZ250
1977 Yamaha YZ125
1977 Yamaha YZ250
1978 Honda CR250R
1978 Yamaha YZ125
1978 Yamaha YZ250
1979 Honda CR125R
1979 Honda CR250R
1979 Yamaha YZ125
1979 Yamaha YZ250
1980 Honda CR125R
1980 Honda CR250R
1980 Yamaha YZ125
1980 Yamaha YZ250
1981 Honda CR125R
1981 Honda CR250R
1981 Yamaha YZ125
1981 Yamaha YZ250
1982 Honda CR125R
1982 Honda CR250R
1982 Yamaha YZ125
1982 Yamaha YZ250
1983 Honda CR125R
1983 Honda CR250R
1983 Yamaha YZ125
1983 Yamaha YZ250
1984 Honda CR125R
1984 Honda CR250R
1984 Yamaha YZ125
1984 Yamaha YZ250
1985 Honda CR125R
1985 Honda CR250R
1985 Yamaha YZ125
1985 Yamaha YZ250
1986 Honda CR125R
1986 Honda CR250R
1986 Yamaha YZ125
1986 Yamaha YZ250
1987 Honda CR125R
1987 Honda CR250R
1987 Yamaha YZ125
1987 Yamaha YZ250
1988 Honda CR125R
1988 Honda CR250R
1988 Yamaha YZ125
1988 Yamaha YZ250
1989 Honda CR125R
1989 Honda CR250R
1989 Yamaha YZ125
1989 Yamaha YZ250
1989 Yamaha YZ250WR
1990 Honda CR125R
1990 Honda CR250R
1990 Yamaha YZ125
1990 Yamaha YZ250
1990 Yamaha YZ250WR
1991 Honda CR125R
1991 Honda CR250R
1991 Yamaha YZ125
1991 Yamaha YZ250
1992 Honda CR125R
1992 Honda CR250R
1992 Yamaha YZ125
1992 Yamaha YZ250
1993 Honda CR125R
1993 Honda CR250R
1993 Yamaha YZ125
1993 Yamaha YZ250
1994 Honda CR125R
1994 Honda CR250R
1994 Yamaha YZ125
1994 Yamaha YZ250
1995 Honda CR125R
1995 Honda CR250R
1995 Yamaha YZ125
1995 Yamaha YZ250
1996 Honda CR125R
1996 Honda CR250R
1996 Yamaha YZ125
1996 Yamaha YZ250
1997 Honda CR125R
1997 Honda CR250R
1997 Yamaha YZ125
1997 Yamaha YZ250
1998 Honda CR125R
1998 Honda CR250R
1998 Yamaha YZ125
1998 Yamaha YZ250
1998 Yamaha YZ400F
1999 Honda CR125R
1999 Honda CR250R
1999 Yamaha YZ125
1999 Yamaha YZ250
1999 Yamaha YZ400F
2000 Honda CR125R
2000 Honda CR250R
2000 Yamaha YZ125
2000 Yamaha YZ250
2000 Yamaha YZ426F
2001 Honda CR125R
2001 Honda CR250R
2001 Yamaha YZ125
2001 Yamaha YZ250
2001 Yamaha YZ250F
2001 Yamaha YZ426F
2002 Honda CR125R
2002 Honda CR250R
2002 Yamaha YZ125
2002 Yamaha YZ250
2002 Yamaha YZ250F
2002 Yamaha YZ426F
2003 Honda CR125R
2003 Honda CR250R
2003 Yamaha YZ125
2003 Yamaha YZ250
2003 Yamaha YZ250F
2003 Yamaha YZ450F
2004 Honda CR125R
2004 Honda CR250R
2004 Yamaha YZ125
2004 Yamaha YZ250
2004 Yamaha YZ250F
2004 Yamaha YZ450F
2005 Honda CR125R
2005 Honda CR250R
2005 Yamaha YZ125
2005 Yamaha YZ250
2005 Yamaha YZ250F
2005 Yamaha YZ450F
2006 Honda CR125R
2006 Honda CR250R
2006 KTM 250 XC-W
2006 Yamaha YZ125
2006 Yamaha YZ250
2006 Yamaha YZ250F
2006 Yamaha YZ450F
2007 Honda CR125R
2007 Honda CR250R
2007 Yamaha YZ125
2007 Yamaha YZ250
2007 Yamaha YZ250F
2007 Yamaha YZ450F
2008 Yamaha YZ125
2008 Yamaha YZ250
2008 Yamaha YZ250F
2008 Yamaha YZ450F
2009 Yamaha YZ125
2009 Yamaha YZ250
2009 Yamaha YZ250F
2009 Yamaha YZ450F
2010 Yamaha YZ125
2010 Yamaha YZ250
2010 Yamaha YZ250F
2010 Yamaha YZ450F
2011 Yamaha YZ125
2011 Yamaha YZ250
2011 Yamaha YZ250F
2011 Yamaha YZ450F
2012 Yamaha YZ125
2012 Yamaha YZ250
2012 Yamaha YZ250F
2012 Yamaha YZ450F
2013 Yamaha YZ125
2013 Yamaha YZ250
2013 Yamaha YZ250F
2013 Yamaha YZ450F
2014 Yamaha YZ125
2014 Yamaha YZ250
2015 Yamaha YZ125
2015 Yamaha YZ250
2016 Yamaha YZ125
2016 Yamaha YZ250
2016 Yamaha YZ250X
2017 Yamaha YZ125
2017 Yamaha YZ250
2017 Yamaha YZ250X