Description
Rediscover the authentic two‑stroke riding experience with the Athena 80cc Big Bore cylinder kit, designed to breathe new life into Franco Morini T4 and GS 50 engines.
Developed for enthusiasts, restorers and vintage 2‑stroke lovers, this kit boosts displacement from 50cc to 80cc, delivering stronger torque, quicker response, and a livelier, more enjoyable riding character while preserving the simplicity and reliability of classic small‑bore engines.
From 50cc to 80cc: stronger torque and better rideability
The Athena big bore cylinder is made from high‑dissipation aluminum alloy with a special internal coating to ensure excellent thermal efficiency and long‑term durability.
The increased bore and revised port layout provide a fuller combustion cycle and a more robust power delivery across the entire rpm range.
The kit includes a high‑performance piston with reinforced rings designed to withstand the increased thermal and mechanical load of the 80cc configuration.
This results in quicker take‑off, stronger mid‑range pull, and a riding feel that remains faithful to the spirit of classic 1980s–1990s mopeds.
Easy installation, perfect compatibility
The 80cc Big Bore kit fits directly onto original Franco Morini crankcases and their Malaguti and Peripoli derivatives, allowing a straightforward installation without invasive modifications.
All required gaskets are included for precise and reliable assembly.
Athena quality for vintage two‑stroke engines
Manufactured to Athena’s high standards, each component is engineered for durability, thermal stability and consistent performance. It is the ideal upgrade for riders who want to restore, enhance, or simply enjoy the authentic character of their vintage moped.
The Athena 80cc Big Bore cylinder kit is the perfect choice to give your Franco Morini or Malaguti classic more torque, more liveliness, and a refreshed riding feel—without compromising its original soul.
Sensitive increase in performance without compromising engine reliability
