British Customs America & Speedmaster Intake Billet Manifolds
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British Customs America & Speedmaster Intake Billet Manifolds

  |   British Customs


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British Customs America & Speedmaster Billet Intake Manifolds

Looking to improve throttle response or just need some additional support? The British Customs Billet Intake Manifolds replace your factory intake manifolds, providing increased performance and additional support. The performance is increased through an innovative integrated vortex design that increases air flow and improves fuel automization, resulting in improved low end torque and throttle response.

The British Customs Billet Intake Manifolds are a unique two-piece design. The first piece is a CNC-machined manifold that provides a solid base, with an integrated vortex design to increase performance. The second piece is a banded rubber carb adapter that provides a firm mounting position for the carburetors to the cylinder head and is perfect for bikes fitted with larger aftermarket carburetors or with the air box removed.

This product is ideal when running stock CVK or aftermarket carburetors (air box must be removed). For peak performance, combine with the British Customs Bomber Exhaust and Air Box Removal Kit.


  • Billet intake manifolds
  • O-ring seals
  • Mounting flange with custom clamps
  • Brass nipples for tuning
  • Stainless steel mounting hardware
  • CNC machined from 6061 aluminum
  • Increased airflow and improved fuel atomization
  • Improved low end torque and throttle response
  • Extra support for large carburetors (especially after air box is removed)
  • Superior resistance to the elements/weather
  • Eliminates flex and prevents leakage

Note: Bike must be fitted with an Air Box Removal Kit. This product does not fit the Triumph America & Speedmaster EFI models. This product has been developed as a performance upgrade, check with local regulations prior to purchasing and installing this part. Not DOT approved. Laws concerning this product vary from state/province to state/province. Your state/province may prohibit its use on public roads or restrict its use to novelty, show use, off road areas, or race facility areas only, in some states/provinces off road use are also prohibited. The manufacturer and retailer assumes no responsibility for any use or application of this product in violation of any applicable law. Before installing this product, please check your state/province and local/municipal laws and regulations. For off road use, not legal for registration for on road use in California.


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