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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 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)