Round Filters

Round Filters
Performance air filter to be installed after removing air box by K&N.
Usually ships in 3-5 Business Days


The K&N Round Filter helps boost performance by opening up the intake system, increasing air flow into the engine and allowing it to run more efficiently. The retro round style adds a vintage touch to any Triumph Classic or Cruiser. K&N Rounds Filters fit perfectly with British Customs Air Box removal kit. All K&N Filters are washable and reusable.


Air Filter (I.D.): 2-1/8" (54mm)

Injector (I.D.): 2-1/16" (52.5mm)

Air Filter Diameter: 3-1/2x 5

Note: These are not stock replacements filters. You must remove your air box prior to installation.

This part fits the following models
Triumph America Carb - 2002-2008
Triumph America EFI - 2009-2016
Triumph Bonneville T100 EFI - 2009-2016
Triumph Bonneville T100 Carb - 2002-2008
Triumph Bonneville Mag - 2009-2015
Triumph Scrambler 900 EFI - 2009-2016
Triumph Scrambler Carb - 2006-2008
Triumph Thruxton 900 EFI - 2009-2016
Triumph Thruxton 900 Carb - 2004-2008
Triumph Speedmaster EFI - 2009-2016
Triumph Speedmaster Carb - 2003-2008
*Refer to Description in event of VIN specific fitment
Q & a

Product Questions

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Do they fit with your airbox removal kit
These filters will work on our Air box removal kit, however, you will not be able to use the stock side covers with these filters if you don't mind exposing your air filters.
Customer Support answered on October 18, 2016