MV Agusta · 1953–1961
MV Agusta 175 CS, CSS and AB: history and buying advice
The ‘Disco Volante’ with overhead camshaft, MV’s bestseller.

History
In 1953 MV Agusta brought out a 175 cc single with a chain-driven overhead camshaft. There were touring, GT and sports versions. The sporting CS and CSS got the nickname Disco Volante, flying saucer, because of the round shape of the tank. The 1954 CSS had an Earles front fork and higher compression; only about 500 of those were made.
From 1957 there was also a cheaper overhead-valve version: the AB. From it grew the 235 Tevere. The 175 also scored on the track: on the Squalo racer a young Mike Hailwood won his first race in 1957. With almost 30,000 made in total, the 175 series was the bestseller among the four-stroke MVs.
Key data
| Engine | 1 cylinder, four-stroke, overhead camshaft (AB: overhead valves) |
|---|---|
| Capacity | 175 cc (59.5 × 62 mm) |
| Power | CST 8 hp; CS 11 hp; CSS approx. 15 hp |
| Top speed | CS approx. 110 km/h; CSS approx. 135 km/h |
| Production | CSS approx. 500; CS approx. 4,500; CSTL approx. 9,500 |
What to check when buying
- A genuine CSS is rare and expensive. Check the numbers; many CSs were converted later.
- Listen to the cam chain and the valves with hairpin springs.
- Check whether it is an OHC model (CS, CST, CSTL) or an overhead-valve AB; that makes a big difference in value.
- Check the tank for dents and rust; a good Disco Volante tank is expensive.
- Ask about parts and a workshop manual.
SourcesWikipedia: MV Agusta 175 series (English)Cybermotorcycle: MV Agusta models (English)