Bonneville & Thruxton Air Box Removal Kit
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Bonneville & Thruxton Air Box Removal Kit

  |   British Customs
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This product is not for sale in California and use is restricted for closed course competition only. Not intended for street use on any pollution controlled motor vehicle. Any order constitutes Buyers offer to Seller and agrees to the Terms and Conditions stated here upon purchase or acceptance.


The better your Triumph Modern Classic breathes, the better it performs. Its just that simple. With the British Customs Air Box Elimination Kit you can remove the restrictions inherent with the OEM air box and snorkel configuration and open up the fuel system with some free-breathing K&N cone filters. Dollar for dollar, this is the best performance upgrade you can get for your Bonneville or Thruxton.

Simply scrapping your stock air box doesn’t work – it also serves as the mounting point for some pretty important equipment like your relays, fuses, solenoid and rear master cylinder. British Customs reengineered an entirely new air intake system, complete with a new battery box de-sign that provides all those essential mounting points.

The battery box is made of lightweight aluminum with wrinkle powder coat finish for durability. All brackets, hardware and fastening points for reinstallation of stock components are included, right where you need them. This upgrade works with stock side covers.

Available as full kit with Air Filters and hardware or Battery Box only (including hardware)

NOTE: Laws regulating motorcycles and motorcycle modification vary between states, provinces and municipalities. It is the rider’s respon-sibility to understand and comply with local laws. The manufacturer and retailer assume no responsibility for any use or application of this product in violation of any applicable law.

Kit Includes:
  • British Customs battery box
  • K&N crankcase breather filter
  • K&N high flow air filters
  • Stainless steel hardware


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Reviewed by
11/16/2015 - 08:51:40 AM
An amazing piece of kit
I have never bought/installed a piece of equipment that went in as precisely as the British Customs Airbox Eliminator. It's well made and incredibly durable.
I set aside an afternoon to do the job on my 2010 Bonneville SE and it only took me a couple of hours. Everything came out and went on EXACTLY as the instructions said it would. best fitting piece of equipment I've ever bought. Well done British Customs.
Reviewed by
01/21/2014 - 08:31:02 AM
Clean up
great combo. fit and finish is A+. looks stock after i installed it. everything like the wiring has all the write brackets to make install easy. you will have to remove your rear wheel to install this, as i didn't find any other way to get the box out. install in it self was very straight forward. i feel like i saved at least 5 lb of the bike if not more by removing the huge plastic air box. you can hear the nice vacuum as you open the throttle. sounds beasty.