The YS-61 Long Stroke 2 Cyl Model Pumped Airplane Engine is a high-performance engine designed for RC airplanes. With its 2-stroke design and fuel injection system, it offers reliable power and smooth operation. Compatible with various scales and fuel types, this engine is suitable for a wide range of aircraft models. The brand, YS, is known for producing quality engines, making this a dependable choice for hobbyists and aviation enthusiasts looking for a durable and efficient engine for their planes.