The GXR120 engine is suitable for a wide range of heavy-duty applications, construction equipment, portable generators, pumps and other industrial applications.

Engine features:

  • The OHC design is driven by a maintenance-free, low-noise timing belt, which makes the engine more compact and lightweight
  • A special cast iron cylinder sleeve and a high carbon steel, dual ball-bearing crankshaft ensure a high durability and reliability
  • The unique OHC  layout combined with a large-capacity muffler reduces engine noise to low levels for better user-friendliness
  • Meets world's most stringent environmental legislation
  • A compact combustion chamber with high thermal efficiency ensures low fuel consumption

Show more

Add engine to comparison
Engine type 4-stroke single cylinder
OHC petrol engine
horizontal shaft
Cylinder sleeve type Cast iron sleeve
Bore x Stroke 60 x 43 mm
Displacement 121 cm³
Compression ratio 8.6 : 1
Net power 2.3 kW ( 3.1 HP ) / 3600 rpm
Cont. rated power 1.6 kW ( 2.2 HP ) / 3000 rpm
1.8 kW ( 2.4 HP ) / 3600 rpm
Max. net torque 6.3 Nm ( 0.64 kgfm ) / 3000 rpm
Starter Recoil
Ignition system Transistorised
Fuel tank capacity 0.77 Liter
Fuel cons. at cont. rated power 0.97 L/h - 3600 rpm
Engine oil capacity 0.4 Liter
Dimensions (L x W x H) 287 x 304 x 418 mm
Dry weight 11.0 kg
Power curve GXR120

The power rating of this engine is the net power tested on a production engine for this engine model and measured in accordance with SAE J1349 at a specified rpm. Mass production engines may vary from this value. Actual power output for the engine installed in the final machine will vary depending on numerous factors, including the operating speed of the engine in application, environmental conditions, maintenance, and other variables.

Read more


Dimensions GXR120
Select the category and available language:

Find suitable spare parts for your Honda Engine


Find the nearest service point in your area


Find all the info and manuals you need

Other GX Engines


Honda Engines, always a superhero by your side

Read more

Website concept by IOTTA