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RU-1100
$37.99 USD
MSRP $58.99 35.6% Off
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K&N RU-1100

Universal Air Filters > Universal Rubber Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   1 Customer Review
  • 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.

[More Information on Universal Air Filters]

Product Specifications

Air Filter ShapeOval
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.52 oz (15 ml)
Flange Inside Diameter2.25 in (57 mm)
Flange Length0.625 in (16 mm)
Flange TypeCentered
Flanges1
Height5 in (127 mm)
Outside Length4.5 in (114 mm)
Outside Width3.75 in (95 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height7.25 in (184 mm)
Product Box Length4.63 in (117 mm)
Product Box Width4.63 in (117 mm)
Product StyleOval Straight Universal Air Filter
Top Material/FinishNone
Top StyleRubber
Weight0.8 lb (0.3 kg)

K&N RU-1100 Product Reviews

Review part RU-1100
Tuesday, December 01, 2015 - Part RU-1100
Hellishly expensive, but K & N has been hellishly expensive for the 30 years I've been using them. I put two of these RU-1100s onto the mikunis carbs on my fairly heavily-modified 72 triumph bonneville street bike, after measuring the clearances, top to bottom, side to side, and front to back. The filters fit just like I planned, and work just like I intended. T the significant thing that makes K & N worthwhile, aside from the quality of the filters themselves, is the extensive size information available online. I'm used to having to guess how big things are based on vague descriptions, and then sending them back for a second try, or a third, or giving up. The very complete and specific information on the K & N website allowed me to work out exactly what I needed from fifteen or twenty alternative lengths, widths, and inside and outside diameters, and the filters fit perfectly, with exactly the clearances I planned. I i also use four K & N filters on my 74 triumph trident, three on the 26mm mikuni carburetors and another on the crankcase breather. I i'm running 35mm keihin FCR carbs on my 1965 triumph land speed race bike, and if I could figure out how to put filters over the FCR open velocity stacks, I'd use them there. No application for those carbs, unfortunately. if you come up with one I'll use them.

Kevin Roberts
Belmont, Ohio