DLE-85 Two-Stroke Petrol EngineProduct Features Included mount secures the engine while reducing vibration that could damage the airframe. Included exhaust extension can be cut to fit the model and prevents residue buildup inside the cowl. The ignition module will accept 4. 8 8. 4V power sources and the optional DLE tachometer. Large outlet stinger on muffler allows the engine to breathe better and produce more power. li> Product Description Single cylinder power that's silky