Honda iGX800 25.0HP EFI V-Twin Petrol Engine

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Honda iGX800 V-Twin general-purpose engines offer versatile power—expanding into larger and more demanding commercial applications for greater adaptability with excellent fuel efficiency in a compact package. The new engines, expand the Honda V-Twin lineup and now are the most powerful electronic fuel-injected models offered by the Honda Power Equipment division. The all-new Honda iGX800 engines provide versatile power based on changing loads for bigger equipment.
Delivering complete drive-by-wire remote control capability for engine operation and benefiting both contractors and the environment, Honda iGX technology results in excellent fuel efficiency, low emissions, and low noise through engine speed that adapts to fluctuating power demands. The result is more consistent output and less stress on industrial equipment and tools. Efficient Fuel Consumption: Honda V-Twin engines with EFI boast excellent fuel efficiency due, in part, to an electronic control system (ECS, see discussion below) that continually monitors and adjusts the engine's air/fuel ratio according to variable operating conditions and engine load requirements, maintaining optimal combustion conditions.
Adaptability and Enhanced Reliability: In addition to optimizing air/fuel ratios, the Honda V-Twin EFI-equipped engines offer improved ignition timing over the complete range of operating speeds and compensate for other factors to continually maintain optimal performance. Improved Starting: Honda iGX800 V-Twin engines boast easy starting performance in both hot and cold temperature conditions, such as when the equipment is started cold or temporarily stopped mid-job. The EFI system and high-pressure fuel pump allow for an ideal air/fuel mixture before it is emulsified and vaporized.


  • Engine Type Air cooled 4-stroke EFI OHV petrol engine, 90° V-twin design
  • Bore x Stroke (mm) 2 / 83 x 72
  • Displacement (cc) 779
  • Starter Type Electric Start
  • Horsepower Class  18.5KW (25 HP) / 3600 rpm
  • Shaft Size 1-1/8 inch Keyway
  • Fuel Type Unleaded
  • Oil Capacity (Ltr) 1.9
  • Dimensions LxWxH (mm) 429 x 483 x 438

Note :- Muffler Not Supplied with engine - Can be supplied at additional cost



Not All Engines Are Created Equal.

The iGX800 with Electronic Fuel Injection, Electric STR governor, Drive-by-Wire control, and a host of other advanced features help to maximize productivity and make the job easier. And of course, the same legendary Honda quality and reliability users expect.

  • Commercial Lawn and Garden Equipment
  • Construction / Industrial Equipment
  • Small Vehicles
  • Generators
  • Pressure Washers
  • Forestry Equipment
  • Agricultural Equipment


  • Hemispherical combustion chamber delivers rapid combustion Learn More
  • 9.1:1 compression ratio generates high power output without the need for premium fuel
  • Forged steel crankshaft
  • Pressure fed crankshaft bearings
  • STR Governor ( Self Tuning Regulator) Learn More
  • Integrated cylinder and head Learn More
  • Racing inspired forged steel connecting rods and rocker arms
  • Insert style rod bearings
  • High capacity 36 blade cooling fan
  • Aluminum push rods with steel tips - lighter weight, lower vibration, and quieter operation
  • High capacity pump provides consistent oil delivery Learn More
  • Dual element (foam pre-cleaner and paper filter element)
  • High capacity charge systems (17A or 26A)
  • Premium regulator/rectifier
  • Oil cooler helps slow oil degradation, and maximizing engine life
  • SAE J1939 CAN Bus communication functionality Learn More
  • 3-Year Limited Warranty
  • Oil Alert Learn More
  • Rev limiter protects against damage caused by over-revving
  • LED diagnostic indicator Learn More
  • Link with tablet or PC for easy diagnosis Learn More
  • Drive-By-Wire control Learn More
  • Automotive-type spin-on oil filter
  • Full Auto Choke for ease of use
  • Electronically controlled RPM programming for a variety of applications
  • Conveniently located controls, with several configurations available based on user preference
  • Electronic Fuel Injection (EFI) Learn More
  • Automatic mechanical de-compression system Learn More
  • Variable ignition timing

  • No catalyst necessary

  • Oil level or pressure type switch
  • High mount muffler (right or left exit )
  • Control Box, DBW type
  • Air filter, Donaldson canister type
  • Fan cover protector



Engine Type V-Twin, Air-cooled, 4-stroke, OHV
Bore x Stroke 83 X 72 mm
Displacement 779 cm3
Net Power Output* 24.9 hp (18.6 kW) @ 3,600 rpm (SAE J1349)
Net Torque* 40.2 lb-ft (54.5 Nm) @ 2,500 rpm (SAE J1349)
PTO Shaft Rotation Counterclockwise (from PTO shaft side)
Compression Ratio 9.1:1
Charge Coil Options 17A, 26A
Fuel System Electronic Fuel Injection
Throttle Control Drive-By-Wire
Ignition System Full Transistorized
Starting System Electric
Lubrication System Full Pressure
Governor System Electronic System (Self Tuning Regulator)
Air Cleaner Dual Element Panel or Canister Style
Oil Filter Automotive Style
Oil Capacity 2.1 US qt (2.0 L)
Fuel Unleaded Gasoline 86 octane or higher
Dry Weight 103.4 lb (46.9 kg) TXA2 model type
WARNING: California Prop 65 Info



Length (min) 16.9" (429 mm), TXA2 model type
Width (min) 19.4" (492 mm), TXA2 model type
Height (min) 17.2" ( 438 mm), TXA2 model type



V type Tapered shaft View Details
T type Straight shaft View Details
B type Straight shaft View Details