1979 Simonini Regolarità 50 Speed
- Regolarità 50 Speed
- Displacement (cc)
- Manufacturing Year
€ 4 200
The Speedy Due was unveiled at the Milan Motor Show in November 1977. This lively and agile bike has an air-cooled long-stroke two-stroke single-cylinder Sachs engine with 38 x 44 mm bore x stroke and 4.6 hp at 7,800 rpm. It has a Dell'Orto 14/12 central body carburettor with round steel mesh air filter. As regards the structure, it has a new 1975 version duplex cradle frame in pastel grey molybdenum chromed AQ45 steel, Marzocchi fork suspensions with 30 mm diameter and Marzocchi AG1-2 gas shocks with 320 mm wheelbase.