The 2011 Tokyo Motor Show included a retrofuturistic concept motorcycle from Yamaha, designed along the lines of the 1955 YA-1.
The Y125 Moegi is powered by an air-cooled 125cc single-cylinder engine (although this new engine is an SOHC four-stroke) sitting in an aluminum frame for a claimed weight of just 80 kilograms (180 pounds), which makes the Moegi (萌黄, "Light Green") significantly lighter than the YA-1 was.
The Moegi uses a low-maintenance belt final drive and rides on 20-inch wheels.

The modified engine is based on the power plant of the YBR125 and Yamaha claims a fuel consumption of 80 km/L (230 mpg‑imp; 190 mpg‑US) for the Y125 Moegi, making it efficient personal transportation in urban environments.
The 2011 Tokyo Motor Show included a retrofuturistic concept motorcycle from Yamaha, designed along the lines of the 1955 YA-1. The Y125 Moegi is powered by an air-cooled 125cc single-cylinder engine (although this new engine is an SOHC four-stroke) sitting in an aluminum frame for a claimed weight of just 80 kilograms (180 pounds), which makes the Moegi (萌黄, "Light Green") significantly lighter than the YA-1 was. The Moegi uses a low-maintenance belt final drive and rides on 20-inch wheels.
The modified engine is based on the power plant of the YBR125 and Yamaha claims a fuel consumption of 80 km/L (230 mpg‑imp; 190 mpg‑US) for the Y125 Moegi, making it efficient personal transportation in urban environments.
Yamaha YA-1