LOS ANGELES (AFP) — An amateur sex video purporting to feature legendary guitarist Jimi Hendrix and two women is bogus, managers of the late rock-star’s estate said in a statement Friday.

In a release on the jimi-hendrix.com website, Experience Hendrix blasted the grainy 40-year-old footage that surfaced earlier this week as a “callous attempt to trade on the image” of the music legend, who died in 1970 aged 27.

“We strongly dispute the claimed authenticity and affirmatively state that Experience Hendrix is neither involved in nor have we authorized the distribution of this film,” the statement said.

“Further, we deplore this obvious exploitation of Jimi Hendrix,” it added. “We are highly offended by the disgraceful portrayal.”

On Tuesday US porn giant Vivid Entertainment said it was releasing “Jimi Hendrix: The Sex Tape.”

The Los Angeles-based company said it obtained the footage from a collector, and said it had been authenticated by experts, including Pamela Des Barres, a former groupie and lover of Hendrix.

Cynthia “Plaster Caster” Albritton, “famous for creating plaster molds of the penises of rock stars, including that of Hendrix,” was also cited as authenticating the video.

However, Kathy Etchingham, one of Hendrix’s steady girlfriends in the 1960s, told the New York Times the man in the tape “is not him. His face is too broad and nose and nostrils too wide for Jimi.”

Celebrity sex videos are highly lucrative part of the adult movie industry, with hotel heiress Paris Hilton and actress Pamela Anderson among those who found themselves unwitting sex tape stars.