In October 1967, the British Motor Corporation (BMC) launched the Mk II Series of the Mini. The Cooper S versions had a new profile with a larger rear window and the larger, angular taillights. The new grille with the wide trims was a striking feature shared by the Morris Mini-Cooper II and its twin brother Austin Mini-Cooper S Mk II. The engineering of the Mk II version of the Cooper S remained unchanged and there were few innovations during the short production period of only two years. The most important innovation was the introduction of the full synchromesh gearbox for all Mini models in October 1968.