25LA Silver (Codec:12352) O.S. Engine  [OSMG0026]

More cooling fin area expands lifespan of engine, and practically eliminates motor seizures going swimming

Added "webbing" in crankcase strengthens high-stress areas to make sure they resist the rigors of learning how to travel

General tighter needle valve fit employs an "O" musical company to carry with all the performance amounts you may need

a fuel inlet that tips up enables easier gas line access for fueling and defueling

NEEDS

• Inventory Numbers: OSMG0026
• Displacement: 0.2485 cu in (4.0 cc)
• Bore: 0.7087 in (18 mm)
• Stroke: 0.63 in (16 mm)
• Practical rpm: 2,500-16,000
• Output: 0.6 hp @ 15,000 rpm
• weight: 6.9 oz (197 g)
• recommended Props: 9x5, 9x6, 10x5