Iwaki (Koichi Iwaki) is a motorbike mechanic who wants to be a racer. He’s tempted by the Red Rose Gang, who are speed junkies destroying everything in their path, as well as the charms of one of their members, Mayumi (Junko Matsudaira),  who doesn’t believe in monogamy, despite being the girlfriend of the gang’s leader, Mitsuda (Yusuke Natsu).

Iwaki is more interested in the more virginal Michiko (Tomoko Ai). That is, he would be, if her overprotective brother Tsugami (Sonny Chiba) weren’t in the way. And oh yeah, Mitsuda doesn’t seem like she’s letting anyone else love Iwaki.

This is the first of four movies in the BAKUHATSU! series. The others are Detonation: Violent Games, Season of Violence (both of which are also directed by Iwaki), and Detonation: 750cc Zoku, which was produced by Yutaka Kohira. It takes its name from the bosozoku motorcycle gangs, who were inspired to ride by kaminari-zoku (thunder gang), who were disaffected war vets who lived in the streets and emulated American early biker culture, like James Dean movies. I also learned — thanks to Takuma on the Kung Fu Fandom message board — that there was a female Toei biker movie, Hell’s Angels: Crimson Roar.

This film just wants to entertain you, whether that’s with rampant nudity, motorcycle racing, or just the authentic, lived-in look that it establishes.

The 88 Films Blu-ray of this movie has an audio commentary by Ashley Darrow and Jonathan Greenaway of the Horror Vanguard podcast, a video essay by Nathan Stuart, stills and a trailer, plus original and new artwork by Ilan Sheady. You can get this movie from MVD.