A motorcycle reportedly featured in the movie Easy Rider has sold for $US1.35 million ($A1.54 million).

The Profiles in History auction house did not identify the buyer for the Captain America chopper.

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Spokeswoman Sabrina Propper says bidding was fierce for the Harley-Davidson reportedly ridden in the 1969 film.

More than one version of the bike was built but according to the auction catalogue, the one that sold was the only one that survived.

The bike was sold by Michael Eisenberg. The catalogue says it was restored by Dan Haggerty.