Graupner O.S. Speed B2103 S Special Edition engine

Coming soon from German O.S. Engines distributor Graupner is the O.S. Speed B2103 S Special Edition engine. The .21 off-road power plant comes with a standard cooling head for improved heat dissipation, allowing to safely run the engine with a leaner carburettor setting which in turn further improves mileage. In addition and when run in higher ambient temperatures, the engine is easier to adjust and offers a more reliable performance.

Source: Graupner [graupner.de]