The GX390 engine is suited to an array of needs and applications. Honda’s GX range is leading the world. This engine features the new 4-stroke with 11.0 HP, 389 cc. displacement and 6.1 litres fuel tank capacity. The GX390 engine can be used for Lawn tractors, Pressure washers, Go-Karts, Trenchers, Agricultural equipment, Chipper/shredders, Air compressors, Concrete saws and a variety of construction equipment.


GX Series Commercial Grade Engine
Powerful Honda 4-stroke engine for unsurpassed torque and fuel efficiency. Incredibly quiet and virtually smoke-free. No need to mix oil and gas. Runs on regular unleaded gasoline.

Oil Alert
The Oil Alert feature enables products to be equipped with a safety system that shuts the engine down if oil reaches an unsafe operating level. This helps prevent engine damage from overheating due to lack of oil.


Max. Net Power (SAE J1349) 8.2kW (11.0HP) @ 3,600rpm
Max. Net Torque (SAE J1349) 25.1Nm @ 2,500rpm
Engine Type Air-Cooled, 4 Stroke, OHV, Single Cylinder
Bore and Stroke (mm) 88 x 64
Displacement (cc) 389
Compression Ratio 8.2 : 1
Ignition System Digital CDI
Starting System Recoil, Electric Start (Optional)
Fuel Tank Capacity (litres) 6.1
Oil Capacity (litres) 1.1
Air Cleaner Dual Element Type (Opt Cyclone Type)
Fuel Consumption 3.4L/hr
Dimensions (L x W x H) (mm) 380 x 450 x 443
Dry Weight (kg) 31.5