RB Twin Cam Pro Series Cooling Head drain bov 54mm Multiple thread pitches are available

Multiple thread pitches are available and a multitude of gear knobs can be used (simply select which thread you require from the options provided or choose a custom thread pitch and write it in the notes when checking out)

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reverberation

it’s all perfectly shaped and you WILL notice less premature piston and bore wear and of course less blow by

you can be confident the mounting orientation will match your existing manifold & outlet hardware

RB Twin Cam Pro Series Cooling Head drain bov 54mm Multiple thread pitches are availableCoupled with our latest release of our Pro Cas with 20 fitting we have now finalised a solution for a matching high flow rear head drain designed to maximise flow though the cylinder head. Dry block with wet head type combinations would benefit extremely by allowing high volume cylinder head cooling.