• K&N RU-4860

K&N FreeFlow Race Replacement Filter

Put this under what is already on the web site


  • Designed to increase horsepower and acceleration
  • Hundreds of sizes and shapes for most applications
  • High air flow with excellent filtration
  • Clamp-on washable and reusable air filter
  • Malleable flanges
  • One year limited warranty

K&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 attachment and can also be stretched for up to 1/16" (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

Product Specifications

Air Filter Large End Diameter

6 in (152 mm)

Air Filter Shape

Round Tapered

Base Outside Diameter

6 in (152 mm)

Filter Material

Cotton Gauze

Filter Re-Oiling Amount

1.24 oz (37 ml)

Flange Inside Diameter

2.5 in (64 mm)

Flange Length

2 in (51 mm)

Flange Type





6.5 in (165 mm)

Package Contents

1 Air Filter

Package Quantity


Product Box Height

11 in (279 mm)

Product Box Length

6.38 in (162 mm)

Product Box Width

6.38 in (162 mm)

Product Style

Round Tapered Universal Air Filter

Top Material/Finish


Top Outside Diameter

5 in (127 mm)

Top Style



1.3 lb (0.6 kg)


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K&N RU-4860

  • $76.99

  • Ex Tax: $76.99

Tags: K&N, FreeFlow, Race, Replacement, Filter