Rotax 275

The Rotax 275 is a vintage, single-cylinder, two-stroke engine produced by BRP-Rotax GmbH & Co. KG (formerly Rotax-Werk AG) of Austria. It was primarily designed for and utilized in kart racing applications during the 1970s and 1980s. The engine is known for its reliability and relatively simple construction, contributing to its popularity in karting for many years.

Key characteristics of the Rotax 275 engine typically included a displacement of approximately 275cc, a piston port intake system, and a centrifugal clutch. Specific horsepower figures varied depending on the state of tune and the racing class regulations in which it was employed. Cooling was generally accomplished via air cooling, often with a fan shroud directing airflow over the cylinder.

While largely superseded by more modern kart engines, the Rotax 275 remains a significant engine in the history of karting. Many engines remain in use in vintage karting events and enthusiast circles. Spare parts availability can vary, but a community exists dedicated to maintaining and restoring these classic engines.

The engine's success helped to solidify Rotax's reputation as a leading manufacturer of two-stroke engines for recreational and competitive applications.