Piston Manufacturing Process

Every piston we make starts with high-quality forgings.

We produce our own forgings in-house on a Fielding & Platt 1000-tonne press, using certified 2618 aluminium. We choose 2618A because it’s incredibly strong and handles long periods of stress and repeated loading without breaking down.

(A bit of history: 2618A was originally the Rolls-Royce RR58 alloy, famously used during the Second World War in Spitfire/Merlin engines.)

After forging, each piece is heat-treated to a T6 standard, checked for hardness, and glass-bead cleaned so we can inspect it closely before machining.

From there, we machine the pistons to suit your requirements. This can include valve pockets or no pockets, custom crown designs, your chosen compression ratios, dished bowls, and more – everything tailored to the engine’s needs.

We can also produce pistons with an offset gudgeon pin (UK) / wrist pin (USA). This offset helps reduce skirt wear, lowers engine noise, and cuts down on thrust load on the piston skirt.