Developed from the popular FS 91 Surpass and honed to perfection in this latest model.

Like its 52, 70 and 120 stablemates, the new FS 91 Surpass II features a new carburettor, longer crankshaft, plated camshaft/crankshaft/ ring and assure it's owner of the best performance in it's class coupled to the O.S. legendary quality and long life.

This is a great engine for scale models that specify a 61 size two stroke as that four-stroke sound is particularly suited to this environment.