 The engine was a Swissauto 500 cc two-stroke V4 engine, designed as a compact and powerful unit which could be used in both sidecar racing outfits and solo bikes.It utilised a single balance shaft and a 6-speed cassette-type gearbox.Its crankshaft design allowed for the engine to fire at different angles, allowing the rider to choose either "big-bang" or "screamer" engine characteristics.