41 hp, 500 cc OHC single-cylinder engine.

The Velocette Thruxton was the high performance variation of the 500-cubic centimeter OHC Venom, introduced in 1958. It is also the most prized, as only 1,108 were built from 1965 through to the end of the company in 1971. The model was named after the 1964 Thruxton 500-mile race victory. In 1967, Manxman Neil Kelly won the 500 production class at the Isle of Man on a Thruxton.

This bike features a tuned engine, big-valve cylinder head, Amal GP carburetor, clip-on handlebars, rear-set footrests, and twin leading-shoe front brake. Most Thruxtons were finished in black with gold pinstripes, however, this example is finished in the optional and handsome blue, with a silver tank and gold striping. The rare Amal GP carburetor is not fitted, but it is included.