Gilera 175 Sport, Rossa and Regolarità

Gilera · 1956–1960

Gilera 175 Sport, Rossa and Regolarità: history and buying advice

The sporting brother of the 150, in bright red.

Nederlandse versie

History

Alongside the popular 150, Gilera built a 175 in the second half of the fifties, with the same layout: an overhead-valve engine with pushrods and a double cradle frame. There was a Sport, a Super Sport and the Rossa Extra, named after its scarlet paint with a two-tone tank.

In 1956 came the 175 Regolarità, one of the first Gileras built specially for reliability trials. Factory riders used it in 1956; a small number were sold the following year. It had an air filter on the carburettor, high mudguards and a high exhaust.

Key data

EngineSingle-cylinder four-stroke, pushrod overhead valves
Capacity172 cc
PowerRossa Extra: approx. 7.5 hp
Top speedRossa Extra approx. 115 km/h, Regolarità approx. 110 km/h

What to check when buying

  • Which version is it? Look at paint, tank, exhaust and mudguards. A genuine Regolarità is rare; replicas also exist.
  • Many parts are the same as on the 150, which makes searching easier.
  • Listen to the valve clearance and look for oil leaks at the pushrod tubes.
  • Italian barn finds often have little rust, but dry rubbers and hardened cables.
  • Compare the frame and engine numbers with the papers.
To the workshop guide

SourcesMuseo Piaggio: 175 RegolaritàMuseo Nicolis: Gilera 175 Rossa ExtraWikipedia: Gilera (English)

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