BMW E30 318i Compression Reduction Plate

Compression Reduction for BMW E30 318i

When converting to a turbocharger or supercharger, the compression ratio must be reduced. This can be achieved with special pistons or a spacer plate, allowing significantly higher boost pressures and power outputs. Under forced induction, the original pistons may not withstand the resulting temperatures at the standard compression ratio.

• Other thicknesses are available on request.

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