Racing Cylinder PINASCO “Vespone RR” 177 cc Stroke 57 mm Vespa 125 GTR 2°/​TS/​150 Sprint 2°/​V/​Super 2°/​PX125-150/​PE/​Lusso/​Cosa

This ‘Vespone RR 177 Racing’ is a very well produced performance cylinder from PINASCO for Vespa largeframe small-block engines and the Pinasco Super Slave for ACMA with 57 mm stroke crank.

This excellent cylinder brings elements from modern two-stroke motor design, such as large area transfer port windows and a bridged exhaust port to the smaller largeframe engines. This enables the cylinder to help provide a performance also suitable for competitive race use to motors stretching as far back as the sixties, through to the final PX engines produced by PIAGGIO and LML.

The long-thread spark plug is mounted centrally in the cylinder head to ensure a more even and efficient combustion. The cylinder cowling will require modification to accommodate this feature and a suitably-sized plug is included in the kit to seal the original off-centre opening. A centring collar facilitates the correct positioning of the cylinder head upon the cylinder.

This performance cylinder is constructed using aluminium, making it more thermally stable than versions made from cast-iron. A cleanly finished cylinder bore lining helps ensure a long and enduring performance.

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