Our company was founded in 1967 by Toshiyuki Watanabe, the current president. We have designed and manufactured the racing cars "Four Miller, FL, FJ-1300, F-3, FP-2000" and have set numerous series champion and course records. We were established in 1972, based on our extensive experience and technology in the manufacture and sale of magnesium wheels for automobile racing . The F3 Association was established by the three companies Watanabe, Hayashi, and Speedster.

He is now also an honorary advisor. We consistently manufacture and sell one-piece cast aluminum mag wheels, and the "Eight Spoke" (8-spoke kamaboko shape) is our signature product, which has established the image of 8 spokes = "RS Watanabe" in the aluminum wheel industry, and is still extremely popular among wheel enthusiasts nationwide and is used by many people. In February 1996, the two-piece magnesium wheel "RM8" passed the first VIA test in Japan.

In the future, we will focus on developing, manufacturing, and selling products that utilize magnesium casting technology (wheels, automotive equipment functional parts, golf clubs, and other products in the field). We also develop, manufacture, and sell unique products such as the cowled three-wheeled bike "Mambo" and the "Rickshaw" that is a faithful reproduction of the original.