Are the ns125d and the Splitter the same engine?
2 Answers
These two motorcycles use the same engine, but there are differences in tuning. Engine: Both motorcycles are equipped with an engine coded as nsc125, which has a displacement of 124.9cc, a compression ratio of 9.8:1, a maximum power of 6.87kw, a maximum torque of 10.3 Nm, a maximum power speed of 7500 rpm, and a maximum torque speed of 6000 rpm. Engine working principle: Motorcycle engines generally operate at higher speeds because they have smaller inertia. The working principle of a motorcycle engine is actually the same as that of a car engine. Motorcycles also use a four-stroke gasoline engine, which operates in four strokes: intake stroke, compression stroke, power stroke, and exhaust stroke. During the intake stroke, the engine's intake valve opens, and the piston moves downward to draw in the combustible mixture.
Speaking of this, I think many people confuse the RX125 with the NS125D, but in fact, they are not the same thing. From what I’ve learned in the motorcycle community, the RX125 specifically refers to a 125cc scooter model by Wuyang-Honda, such as the RX125, which uses a specially designed single-cylinder air-cooled engine that emphasizes fuel efficiency and low noise. On the other hand, the NS125D seems more like another series from Honda, such as the NS125D underbone bike, equipped with a 125cc single-cylinder engine but designed more for rural road use. Although both engines have the same 125cc displacement, they differ in power output, cooling methods, and internal structures, and their parts are not interchangeable. For daily riding, the RX125 scooter is convenient for urban commuting with smooth acceleration, while the NS series is more suitable for off-road use. I recommend carefully checking the vehicle’s nameplate or contacting the dealer when buying or repairing a bike to avoid purchasing the wrong parts for the sake of saving money, which could affect performance.
