The car had a 121 cid (1991 cc) four-cylinder Standard wet liner inline-four engine from the Vanguard, fitted with twin H4 type SU Carburettors and tuned to increase its output to . The body was mounted on a substantial separate chassis with coil-sprung independent suspension at the front and a leaf spring live axle at the rear. Either wire or disc wheels could be supplied. The transmission was a four-speed manual unit, with optional top gear overdrive. Lockheed drum brakes were fitted all round.