Doppler is a brand that was created in the end of the 1980's. It immediatly had a leading position for competition parts, its business core. Since then, the products have inherited of a performant and reliant image. Its part come from manufacturing precision, not only through machining processes, but also through the choice of specific materials. In the 1990's, DOPPLER managed to take the curve and change to general public accessories and engine parts manufacturing. The goal was to advance the brand and to sell at large scale in order to make competition accessible to young people. The first mainstream spare parts developped by DOPPLER are the variators (ER1, ER2, ER3), the cylinders and exhausts for scooters and mopeds.