Rota J-Mag Wheels are strong, light and Certified by VIA, JWL, and ISO. The Rota J-Mag are Mugen M7 replica Wheels. The Rota J-Mag Wheels are one of Rotas most popular wheel and one of the best in there wheel lineup. Rotas are very popular with the import crowd for there good quality and value. It's very rare on race day to not see cars running rotas at the track.