73cc 46.5mm Cast Iron Thermal Unit with 10mm Pin for Piaggio Sì - Malossi
Malossi 73cc thermal unit with a 46.5mm bore and 10mm pin, made of cast iron for Piaggio Sì. It is recommended as a first modification step and designed for use with a standard or homologated exhaust system.
Advantages:
- Cast iron cylinder with 6 transfer ports and a 2-ring piston.
- Compatible with Piaggio Sì and designed for use with original crankcases as well.
- Careful selection of cylinder-piston pairing with a maximum indicated tolerance of 20 microns.
Compatibility:
- Piaggio Si