Category
page 1Two-stroke gasoline engines

Rotax
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Maico
thumb|1956 Maico 250cc
reed valve
type of check valve

Polini
Polini S.p.A. is an Italian manufacturer of tuning parts for motorcycles, mopeds, and scooters founded in 1945. Among other products, they produce cylinders and variators for both racing and road use. They also produce pocket bikes with 50cc up to 15 hp.
Malossi
Malossi S.p.A. is an Italian manufacturer of tuning parts for mopeds and scooters. It was founded by Armando Malossi in 1930.
unit construction
in motorcycle manufacturing, a combined engine and gearbox
Suzuki FB series engine
Suzuki FB/FE/L50/LJ50/T5A/T5B family of engines