Sisters In Leather (1969)

aka: Sisters In Leatherette

A husband (Dick Osmun) is blackmailed by three lesbian bikers after they spot him having sex with another woman (Karen Thomas) in a convertible. They then take the man’s wife (Kathy Williams) out for a picnic and some nude motorcycle riding. The husband finds some male bikers and together they try to save his wife from becoming a lesbian biker. Produced and directed by Zoltan G. Spencer.