The image to the right is an example of what can be achieved, a Triumph T120 oppositional-angle, twin-plug conversion. Such twins cylinder heads cost from £65.00. Other options offered by the Cylinder Head Shop include the use of an offset vertical relocation of the spark plugs and the use of 8mm or 10mm plugs.
Heads previously considered beyond twin-plug modification are now achievable, for example, V8 Aston Martins.
For costs of other applications, please contact us directly.
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