Designed in 2019 to bring your X11 up to date with modern performance systems.

Improved throttle response and performance. Streamlined interiors for increased gas flow and reduced internal turbulence.

TIG welded by hand for smooth internal welds, optimal internal gas flow and power gains. No internal restrictions.

Accepts original O2 Lambda sensor for fuel injected models.

Blanking bolt provided for earlier non injection carburettor models

Compatible with original Honda silencers or any fitted to your standard down pipes.

Performance specification 304 grade stainless steel. Front pipes use 36mm internal diameter pipework.

Ultra-light, these weigh in at a feather weight 3.4kg/7.5lbs making these the lightest stainless steel headers ever made.

Modular spring fit design for easy fitment and replacement of individual pipes.

No re-jetting or modifications required.

Race Performance upgrades, Lambda sensor boss accepts 18mm O2 sensors, use our thread adapter to fit the OEM original Honda sensor, use our blanking bolt for the earlier models with no sensor. For a sensor bypass our blanking bolt can also be used. We have covered every option possible. (We would recommend a professional set up any system that uses a race sensor or bypass option).

Includes all required gaskets, 4 x engine port gaskets, 2 x silencer gaskets, anti-vibration rubber coated Springs and new silencer clamps.

Silencer Material: 3K Weave Carbon Fibre + 304 Grade Blue Stainless Steel Tip

Silencer Body Length excluding tips = 230mm

Silencer Body Diameter = 84mm

Silencer Code: CL23R

See our Silencer Specifications Tab for length & noise levels. Our DB Killers / Baffles are removable.

2 Year Black Widow Unlimited Mileage Warranty.