About the Yamaha QT50 Yamahopper
Yamaha's own history identifies the QT50 as the export version of the Carrot introduced in Japan in 1979. It used a 49cc single-cylinder engine, single-speed automatic transmission and shaft drive. Yamaha's U.S. parts catalog also uses the Yamahopper name on later QT50 entries. These names help identify the model, but market and model-year suffixes still matter when choosing parts.
PartsNMore's current QT50 tags span 1979–1987 across the collection, but the two products cover different subsets. The carburetor float needle is tagged for 1979–1985, while the front brake shoes are tagged for 1979–1987. The union of those years should not be applied automatically to every product.