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K&N SU-4000 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   2 Customer Reviews
  • Designed to provide increased horsepower and acceleration
  • Specifically developed for Off-Road, Motocross, ATVs, UTVs and Side by Sides
  • Pleated cotton media provides a large filtration area offering low restriction, high-capacity and long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Fits directly into OEM air box with application specific sealing bead ensuring a precise fit
  • No fuel management modifications are required to obtain increased performance
  • Washable & reusable, most are pre-oiled and ready to ride!
  • One Year Limited Warranty
K&N off-road replacement air filters are ideal for extended use in dirty and dusty off-road riding and provide clean carburetion even at high altitude. Generally, no jet changes are required with just a K&N filter element. K&N replacement air filters are washable and reusable and provide high air-flow with excellent filtration.

[More Information on Off-Road Motorcycle and ATV Air Filters]

Product Specifications

Air Filter Large End Diameter6.313 in (160 mm)
Air Filter ShapeTapered Conical
Base Inside Diameter5.125 in (130 mm)
Base Outside Diameter6.313 in (160 mm)
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.64 oz (19 ml)
Height3 in (76 mm)
Inner WireNo
Package Contents1 Air Filter, 1 K&N 1oz Sealing Grease
Package Quantity1
Product Box Height8.63 in (219 mm)
Product Box Length8.5 in (216 mm)
Product Box Width3.63 in (92 mm)
Product StyleTapered Conical Air Filter
Top Material/FinishNone
Top Outside Diameter5.438 in (138 mm)
Top StyleRubber
Weight1.1 lb (0.5 kg)

K&N SU-4000 Air Filter Product Reviews

Saturday, April 30, 2016 - Part SU-4000
Great fit and improved performance on my Suzuki DR Z400SM.

Thomas Slayback
Bloomington, Illinois
Saturday, April 23, 2016 - Part SU-4000
Great filters from a great company.

Dennis Hughes
Wichita, Kansas