K&N 56-1390

Custom Assemblies > Custom Racing Assembly
List Price: $109.65
Your Price: USD $70.99

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K&N Custom Air Filters for Single or Two Barrel Carburetors - K&N Custom Air Filter kits are designed to allow the maximum performance from your carburetors, yet keep the dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and the famous K&N High-Flow Washable Air Filter.

[More Information on Custom Air Filters for Single or Two Barrel Carburetors]
  • Designed to increase horsepower and acceleration
  • Show quality with custom chrome top and base
  • Washable and reusable air filter
  • High air flow with excellent filtration
  • One year limited warranty

Available Information

Product Specifications

Air Filter ColorRed
Air Filter Height1.75 in (44 mm)
Air Filter Inside Diameter4.5 in (114 mm)
Air Filter MaterialCotton Gauze
Air Filter ShapeRound
Filter MaterialCotton Gauze
Height1.75 in (44 mm)
Inlet Diameter1.5 in (38 mm)
Inner WireNo
Inside Diameter1.5 in (38 mm)
Mounting Hardware IncludedYes
Neck Flange1.75 in (44 mm)
Outside Diameter5.875 in (149 mm)
Overall Height2 in (51 mm)
Product Box Height6.63 in (168 mm)
Product Box Length6.5 in (165 mm)
Product Box Width3.63 in (92 mm)
Product StyleCustom Assemblies
Replacement FilterE-3180
Top Material/FinishChrome
Top StyleMetal
Weight1.1 lb (0.5 kg)

Customer Feedback

Be the first to review part 56-1390
Have always used K&N oil filters on both my Beta and Triumph. Really like the wrench-off nut on the Triumph can filter. Wonder if you have ever tried to invert the nut into the can to get a more flush cross section. As it is the nut is a bit below the bottom of the frame (on Triumph) making one take caution in lifting the bike for chain care.

Jerry Parker
DeBary, Florida
I am very familiar with the fine products and performance value K&N delivers. I've used these incredible filters on all of my vehicles (two Jeep, SRT, 8 SUVs and my current 2014 Range Rover Sport 5.0L Supercharged) I can feel the difference.

Darryl Walker
Del Mar, CA
Ordered this with free shipping, got it sent direct to my technician. Arrived very quickly, quicker than expected in all honesty along with a couple of free stickers Fits perfectly to my Triumph America, no leaks or mess.

Ian Woodward
Nottinghamshire, England