GW250-A-Power-250CC-BackBone-Haojue

Thunderous Power,
Delight Your Senses

The upgraded 250cc twin-cylinder water-cooled long-stroke engine offers quick starts and strong acceleration throughout the entire speed range. The 20-90 km/h acceleration performance is outstanding, making it ideal for city rides or medium- and short-distance trips. With low engine noise and minimal vibration, combined with outstanding power output, it delivers an exceptional riding experience in both urban and rural environments.

Outstanding Low-to-Mid Range Power Performance

The upgraded engine features variable-diameter valves, projected insulator spark plugs, newly optimized cam profiles, and asymmetrical exhaust pipes, boosting low-to-mid speed torque dramatically and delivering a robust 23.4 N•m at just 6,500 rpm.
Exceptional Fuel Efficiency

Featuring roller rocker arms, low-friction cylinder, thin piston rings, and low-power oil pumps, the engine reduces mechanical loss by approximately 19%. Combined with a switchable rectifier, these improvements significantly enhance the engine's overall fuel efficiency, lowering WMTC fuel consumption by around 5%, as compared to GW250.

Outstanding Low-to-Mid Range Power Performance

The upgraded engine features variable-diameter valves, projected insulator spark plugs, newly optimized cam profiles, and asymmetrical exhaust pipes, boosting low-to-mid speed torque dramatically and delivering a robust 23.4 N•m at just 6,500 rpm.

Exceptional Fuel Efficiency

Featuring roller rocker arms, low-friction cylinder, thin piston rings, and low-power oil pumps, the engine reduces mechanical loss by approximately 19%. Combined with a switchable rectifier, these improvements significantly enhance the engine's overall fuel efficiency, lowering WMTC fuel consumption by around 5%, as compared to GW250.

New-Generation High-Quality EFI System from Japan

The high-quality EFI system from Japan features seven high-precision sensors that dynamically sense engine temperature, intake temperature, intake pressure, throttle position, engine speed, and emissions. The Electronic Control Unit ("ECU") analyzes the data and precisely adjusts the air-fuel ratio and ignition timing for better combustion efficiency.

Roller Rocker Arms

The sliding friction between the rocker arm and cam is replaced by rolling friction, reducing resistance.

Projected Spark Plugs

The projected spark plug design improves ignition performance.

Variable-Diameter Valves

The intake valve root diameter is reduced by 0.5 mm, reducing intake resistance and improving combustion efficiency.

Thin Piston Rings

Using low-tension thin piston rings reduces the contact area and pressure between the piston ring and cylinder wall, decreasing friction.

Low-Friction Cylinder

The angle of the honing texture on the inner cylinder walls is reduced for better oil retention, further reducing friction during piston operation.

Asymmetrical Exhaust Pipes

The specially designed asymmetrical exhaust pipe and internal chamber design effectively increase low-to-mid speed torque.

GW250-A