Bonneville and Thruxton Air Box Removal Kit | EFI Kit

Bonneville and Thruxton Air Box Removal Kit | EFI Kit
Removes stock air box to improve airflow and increase performance.

Availability: In stock

Usually ships in 1-3 Business Days

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)

Kit Includes:

  • British Customs battery box
  • K&N crankcase breather filter
  • K&N high flow air filters
  • Stainless steel 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.

This part fits the following models
Triumph Bonneville T100 EFI - 2009-2016
Triumph Bonneville Mag - 2009-2015
Triumph Thruxton 900 EFI - 2009-2016
*Refer to Description in event of VIN specific fitment
Q & a

Product Questions

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is the crankcase filter supposed to leak oil?
Great question ! That is possible with any crankcase breathers due to several things like oil level being too high, the filter needs to be mounted as high as possible & etc. Make sure that the oil level is at mid-level and you shouldn't run into too much leak problems.
Customer Support answered on July 17, 2016
2015 bonneville se mag, can you still use the side covers with this install?
Great question ! Our Bonneville Air Box Removal kit is compatible with the SE/Mag Bonneville; please note that we have two different versions for Carb & EFI models.
Customer Support answered on July 20, 2016
Are those filters wet-resistant ? Or can the rain damage anything if the kit is mounted ?
There are rain covers available although using the sidecover should keep some water out as well.
Customer Support answered on September 11, 2016
Plenty of benefits ! 1. You achieve the cool look of an open side with exposed filters that are included in the kit (or you can use your sidecovers too) 2. Induction noise 3. Performance gains
Customer Support answered on September 13, 2016