K&N Universal Clamp-On Air Filter 2.25in Flange ID 3.5in OD 2in Height 2003-ktm-250-sxs-base----249cc-esi7168894 They allow Big block engines

They allow Big block engines to turn more RPM

2006 Chevrolet Silverado 3500 WT 2007 Chevrolet Silverado 3500 Classic LS 2007 Chevrolet Silverado 3500 Classic LT 2007 Chevrolet Silverado 3500 Classic WT 2007-2010 Chevrolet Silverado 3500 HD LT 2007-2010 Chevrolet Silverado 3500 HD LTZ 2007-2010 Chevrolet Silverado 3500 HD WT 2000-2001 Chevrolet Suburban 2500 Base 2000-2006 Chevrolet Suburban 2500 LS 2000-2006 Chevrolet Suburban 2500 LT 1997-2000 Ford F-150 Base 2000-2003 Ford F-150 Harley-Davidson Edition 2001-2003 Ford F-150 King Ranch 1997-2003 Ford F-150 Lariat 1999-2003 Ford F-150 Lightning 1997-2003 Ford F-150 XL 1997-2003 Ford F-150 XLT 2001-2003

It is recommended only for street Applications with lighter valve spring loads

enabling a hassle-free installation with no clearance issues

For T3 4 Bolt Outlet without Internal Wastegate (suits 2

K&N Universal Clamp-On Air Filter 2.25in Flange ID 3.5in OD 2in Height 2003-ktm-250-sxs-base----249cc-esi7168894 They allow Big block enginesK&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra strong molded pliable rubber flanges which absorb vibration and allow for secure