It is a motorcycle manufactured by Veloce Ltd, in Hall Green, Birmingham, England, founded in 1904. It is fast, reliable and economical.
It was launched in 1935 as a 500cc sport version. World War II stopped production.
The new MSS was a much more modern machine with the same structure as the Velocette MAC and came with new optional equipment to appeal to the touring market.
Buyers began tuning the MSS model for speed. However, the factory responded by producing the sporty Velocette Venom model.
In 1955, a scrambles version was also produced.
Velocette was a family business, selling nearly as many hand-built motorcycles in its lifetime as mass-produced machines by the giants BSA and Norton.
Renowned for the quality of its products, the company was ever-present in international motorcycle racing from the mid-1920s through the 1950s, culminating in two world championships (1949–1950 350 cc).
The business underwent a gradual commercial decline during the late 1960s, closing in February 1971.
The MSS model was first produced in 1935 and was the third in the M series of overhead valve singles that included the MOV, MAC, Venom and finally the Thruxton, all of which had the high camshaft layout.
The first of these new models was the 250cc MOV of 1933, which was joined in 1934 by a long stroke 350cc version - the MAC.
When creating the MSS, Veloce stuck with the basic design, combining the MAC's 96mm stroke with a larger bore to create their new '500'. The MSS engine went into a new frame derived from the racing KTT. The model disappeared from the Veloce Limited range in 1948, while the company concentrated on the LE, reappearing in 1954 with a new swingarm frame and Hall Green'
It was produced until 1968.