A four-seat tourer model with abbreviated front wings and no running boards called the "Nine Sports" was also made from October 1933, and one of these managed to finish thirteenth at the 1933 24 Hours of Le Mans race.

In 1933, celebrating this moderate success, a new underslung racy two-seat model called the Singer Le Mans appeared.

[2] With twin vertical Solex (30 IF) carburettors, the Sports offered 34 hp (25 kW) at 4600 rpm, providing a 66 mph (106 km/h) with the wind screen down - impressive for the era and at a price considerably lower than the competition.

The Nine Sports was also used in various other endurance races, finishing second in class in the Alpine 6-days trial (Coupe Internationale des Alpes) in 1933.

For 1934 the front wings were elongated to protect the paintwork on the sides of the car, as the earlier short units were found wanting.

Produced from 1933 to 1937,[4] the Nine Le Mans had a higher tuned version of the 972 cc inline-four, with stronger valve tappets, a thicker, sharply angled camshaft paired with flat-back rocker arms, and a bigger and better cooled cast aluminium oil sump of roughly 2 Gallons in capacity.

[2] The chassis was dropped in the centre after the radiator, and thus underslung at the rear, giving the car a much lower profile relative to the road, as compared to the Sports variant.

No running boards, a 12-imperial-gallon (55 L) external fuel tank and twin spare wheels finished the competition appearance, and added valuable weight to the rear axle.

[5] The Nine Le Mans, while not particularly successful at the track which gave it its name, clocked up an impressive number of wins at hillclimbs, trials, and various endurance races such as the Liège-Rome-Liège and the Alpine Cup Rally.

A steel channel-section streamlined body replaced the ash construction, and Electrum was used instead of cast Aluminium, which, when coupled with the engine tuning meant a top speed of over 98 mph (158 km/h).

And whilst advertised as "replicas" of the cars that ran at Le Mans, they share very little mechanically, having a different chassis, front axle, body mounting, and an altered ratio for the differential.

Some were made with 30 FHG horizontal carburettors, but few are known to still exist.. After the Second World War, Solex offered car owners a free upgrade.

They sent in their original carburettor, 30 IF or FHG, and in return they would get a modern, cast aluminium 30 FAI (vertical) or 30 AHG (horizontal) to fit to their car.