is a manga series created by Tetsuhiro Koshita, first serialized in Shogakukan's CoroCoro Comic magazine from July 1994 to October 1999.

The manga centers on Retsu and Go Seiba, brothers who focus on the world of miniature car racing known as Mini 4WD.

Three anime adaptations of the manga were produced by Xebec from 1996 to 1998, each of which consisting of three 51-episode series, and was also made into several games.

The series also released various merchandise, including CDs, trading cards, stickers, and even die-cast cars.

Mini 4WD racing is an interesting hobby where kids and adults compete using customized motorized miniature cars.

Every year, competitions revolving around the hobby circulated around the world, where kids and adults test out their spirit and passion for racing, with companies developing new technologies and innovations for Mini 4WD cars.

The story revolves around the competitive Seiba Brothers: Go and Retsu, who were once constantly arguing with each other to see who between them is the best racer.

An anime adaptation of the series was produced by Xebec, directed by Tetsurō Amino (Macross 7) and written by Hiroyuki Hoshiyama.

It first aired on TV Tokyo from January 8, 1996, through December 30, 1996, covering the first half of the manga.

MAX), aired on from January 5, 1998, through December 21, 1998, covering the events of the sequel manga.