177cc T5 Slave Thermal Group

Racing cylinder kit for Vespa T5 made of aluminum with Nikasil coating. Completely modified and renewed compared to the historic Pinasco cylinder for Vespa T5, it features a new transfer system, an increased exhaust with booster and a head with centering bushings; a special brass head gasket is supplied to reduce operating temperatures. Slave version with reed valve aspiration to the cylinder. - Aluminum casting with NiCaSil galvanic coating - Displacement 177cc - Bore 63mm - Stroke 57mm - Central spark plug head 8 studs - Flanged exhaust with Booster. Must be mounted ONLY with Crankshaft 27082006.