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Honda GX25 Engine


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This item: Honda GX25 Engine

PLEASE NOTE – Honda Power Equipment are experiencing stock shortages throughout Australia and unprecedented demand. Please call us on (08) 9248 2242 OR email us at [email protected] to confirm stock prior to purchasing if urgent.

We appreciate your understanding.


Meet the world’s lightest OHC engine. Honda applied decades of superior engine technology to create the world’s first 360° inclinable 4-Stroke engines.

Perfect for powering Commercial Lawn & Garden Equipment, The ultra-lightweight GX25 Mini 4-Stroke engine efficiently delivers the kind of efficient, clean, powerful, quiet performance that you’d expect from a larger engine – but in a very compact package.

The GX25 is also well-known for powering Tillers/Cultivators, Water Pumps, Agricultural Equipment and Construction/Industrial Equipment.

When you see the GX25 powering Honda-branded handheld equipment like brushcutters and blowers, you know you’re getting a premium engine.

All GX Engines are covered by a Honda 3 Year Warranty!

Key Features

  • Type: 4-stroke, overhead cam, single-cylinder, horizontal shaft
  • Bore & Stroke: 35 x 26mm
  • Displacement: 25cm3
  • Compression Ratio: 8.0:1
  • Net Power: 0.72kW (1HP) at 7000rpm
  • Maximum Net Torque: 1.0Nm at 5000rpm
  • Ignition System: Transistorised magneto ignition
  • Starting System: Recoil starter
  • Cooling System: Forced-air
  • PTO Shaft Rotation: Counter-clockwise (from PTO side)
  • Fuel Consumption at Rated Power: 0.54L/h at 7000rpm
  • Recommended Fuel: Unleaded
  • Lubrication System: Oil mist
  • Recommended Oil: 10W/30 API SG
  • Oil Capacity: 0.08l
  • Fuel Tank Capacity: 0.55L


  • Dimensions: 192 x 221 x 230mm
  • Dry Weight: 2.78kg (w/o clutch)