[1] The company which existed before World War I built voiturettes, while the post-war iteration specialized in off-road vehicles.
[4] Between the wars, the Sinpar shops engaged in extending and reinforcing truck chassis, mostly Fords and Citroëns.
[4] After operations ceased during World War II, Léon Demeester, who had established the business back in 1907, resurrected it once again in 1946 along with his son Pierre.
Sinpar then engaged in winch manufacture and heavy-duty transmission sub-assemblies for four- and six-wheel drive trucks.
In 1962, they showed an all-wheel-drive chassis with fully independent, torsion bar suspension, fitted with the Ford 6D engine from the Thames Trader.
[7] In 1968 Sinpar designed the Torpedo S, a jeep-style car with body by Brissonneau and Lotz which did not enter production.
[9] Together with the company's German agent, Rau GmbH of Stuttgart, Sinpar also helped develop a four-wheel-drive version of the Ford Transit in 1982.