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What is the compression ratio of Haojue 125 motorcycle-(Haojue vf125 compression ratio)

In the low-end prince model of Haojue, you should know all about the Haojue brand.

GN125 and HJ125 models,

And these two models have coexisted for a long time, and these two cars are still very popular now.

There seems to be little difference in appearance between the two models, and the price difference is quite big.

One is more than 6 thousand, one is more than 8 thousand, and it's worth spending 2 thousand more.

Today, let's see what's the difference between these two cars.



Actually, the predecessor of GN125 is the model of Haojue Suzuki motorcycles, so accurately speaking, this is a joint venture brand car, but after the separation of Haojue Suzuki motorcycles, there is no bell. So both models are now owned by Haojue. But as we all know, in terms of technology, Haojue is the best manufacturer to absorb and digest the joint venture technology, so even after leaving Suzuki, Haojue still survives well on its own strength. Therefore, despite Suzuki's departure, these two models of Haojue still maintain a good reputation in sales and market feedback.

Aside from the appearance factor, the biggest difference between the two models is the powertrain.

GN125 still uses the Guinea series engine, while HJ125 uses the Democratic Republic of Congo series engine, which is the core difference between the two models.

There are some minor differences in other configurations, but most configurations are still the same, because from the perspective of supply chain, the production and operation costs of manufacturers using the same parts will be lower, which is also in line with business logic.

The biggest difference between Guinea series engines and Democratic Republic of Congo series engines lies in the valve train structure.

Guinea series engines use chain valve train structure, while Democratic Republic of Congo series engines use ejector rod valve train structure. Because of the different valve train structure, the power adjustment of the two engines is slightly different, which is determined by the physical characteristics of the valve train structure.

Let's take a look at the comparison of the specific parameters of the two engines.

GN125 adopts a single-cylinder air-cooled four-stroke 125ml engine with an accurate displacement of 124mL.

Cylinder diameter × stroke is 57mm × 48.8mm, compression ratio is 9.2:1, maximum power is 7.8kW, and maximum torque is 9.2N meters.

The oil supply mode is intelligent EFI, the transmission adopts five-speed reciprocating type, and the starting mode is electric/foot double starting point.

HJ125 adopts a single-cylinder air-cooled four-stroke 125cc engine with an accurate displacement of 124mL.

The cylinder diameter× stroke is 56.5mm × 49.5mm, the compression ratio is 9.5:1, the maximum power is 7.4kW, and the maximum torque is 9.6N?m.

The oil supply mode is intelligent EFI, the transmission is a five-speed cycle, and the starting mode is electric/foot double starting point.

As can be seen from the above, in fact, except that the valve train of the two engines is different,

Cylinder diameter * stroke, transmission and starting mode are also different. It can be seen that the cylinder stroke of HJ125 is slightly longer.

GN125 will be higher in power, but HJ125 will be higher in maximum torque. In terms of adjustment, in the low speed region, the power of HJ125 will be stronger and the power will come faster. So many people say that HJ125 is more suitable for rural and mountainous areas, while GN125 is more suitable for urban roads.

But in fact, my personal opinion is that this statement is not completely correct, at least in daily transportation, this statement is untenable.

Our actual driving experience will not be very different in daily transportation, so it is difficult to feel it.

Of course, if the heavy load is considered, perhaps HJ125 will have a slightly better experience. After all, the low-speed torque of the ejector does have an advantage.

In addition to the above differences, there are still some differences between these two engines in the latest models of Haojue.

For example, the engine of GN125 has double oil filtration, but the engine of HJ125 does not. In terms of magneto, the magneto power of GN125 is higher than that of HJ125, and the internal air passage design, combustion technology and lightweight of high-speed moving parts of GN125 will be a little more advanced than that of HJ125.

In addition, among the latest models,

According to Haojue's introduction, GN125 also optimizes the shock absorption, and the riding comfort experience will be more obvious.

I won't elaborate on other aspects here, such as some non-core accessories, the configuration of the two cars is basically the same, for example, air filter, handle, throttle line and so on. In sitting posture, frame design and EFI system, it is also synchronized.


The above summarizes the main differences between Haojue's GN125 and HJ125 models. Generally speaking, the price is expensive. As the saying goes, you get what you pay for. This sentence is out of date in any era. Manufacturers are not fools, let alone the people. Who has the money in their pockets?

When you buy a car, you can buy it according to your actual needs. If you have a little more money, you can't go wrong in buying a GN125. If you don't want to spend more than 2,000 yuan, you can choose HJ125.

The two models only have different positioning, but in terms of durability and quality stability, everyone can rest assured that both models are battle-hardened and market-tested.

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