Mad Foxes (1981)

aka's: Los Violadores/Stingray 2/
Desperado's Op Wielen

Tale of Hal (Robert O'Neil) and his girlfriend Babsy (Andrea Albani), who encounter a group of ornery dirt bikers one night. Hal is beaten and Babsy raped. For revenge, Hal gets his kickboxing pals to pummel the bikers and castrate their leader. Eric Falk, Laura Prenika, Peter John Saunders and Brian Billings also star. In widescreen format and uncut.