It had changed its color and was renamed to Z400. Its power had been raised by 1PS/0.2kg-m in December, and was changed into MY77 version that had new electronic parts.
It was the revival of the bike that once gained popularity among fans by the name, EPO. Its unique frame and outer spring fork attracted people's attention.
It conformed to the emission regulation by adopting a catalyst tube and a compensator. It also came in a special version that had a 3D emblem and large assist grips.
It had a Ceriani type front fork, an engine guard pipe and an air pump. It added the sport type S, which had a 4-speed rotary transmission, to its line.
The automatic RV50 with an automatic centrifugal 3-speed transmission had underwent a model change. It adopted slim 3.50 tires designed for rides on paved roads.
It mounted a YZ80-based crankcase reed valve engine with a self starter. Its frame, swing arm, and front fork were revised, and its exhaust was made larger.