The K&N RU-1090 kart style filter comes as a single filter and will fit a wide variety of applications, dimensions are listed below.  Air filters are pre-oiled for immediate use.  Uses the RU-0500PK filter wraps. 


A few but not all of the possible applications include:

• Honda ATC250R with VM30-34 carburetors
• Yamaha RD350
• Yamaha RZ350
• Yamaha RD400
• Any kart or small engine application requiring a round 4" straight filter with a 57mm opening
  

Part RU-0600 Product Specifications
Product Style: Round Straight Universal Air Filter
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flange Inside Diameter: 2.25 in (57 mm)
Flange Length: 0.625 in (16 mm)
Flanges: 1
Flange Type: Centered
Height: 4 in (102 mm)
Outside Diameter: 3.5 in (89 mm)
Top Material/Finish: None
Top Style: Rubber
Filter Re-Oiling Amount: 0.34 oz (10 ml)
Inner Wire: No
Weight: 0.49 lb (0.22 kg)
Product Box Length: 4.63 in (117 mm)
Product Box Width: 4.63 in (117 mm)
Product Box Height: 4.25 in (108 mm)