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.

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


Fuel Efficient Operation
High Output Performance
  • 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
Smooth Performance
  • Integrated cylinder and head Learn More
  • Racing inspired forged steel connecting rods and rocker arms
  • Insert style rod bearings
Exceptionally Quiet
  • High capacity 36 blade cooling fan
  • Aluminum push rods with steel tips - lighter weight, lower vibration, and quieter operation
Proven Reliability
  • 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
Easy to Use and Maintain
  • 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
Easy Starting
  • Electronic Fuel Injection (EFI) Learn More
  • Automatic mechanical de-compression system Learn More
  • Variable ignition timing
Emissions Compliant
  • No catalyst necessary
Available Options
  • 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

Performance Curves

iGX800 Performance Curve

The SAE J1349 standard measures net horsepower with the manufacturer’s production muffler and air cleaner in place.Net horsepower more closely correlates with the power the operator will experience when using a Honda engine powered product.The power rating of the engines indicated in this document measures the net power output at 3600 rpm(7000 rpm for model GXH50, GXV50, GX25 and GX35) and net torque at 2500 rpm, as tested on a production engine. 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 operation speed of the engine in application, environmental conditions, maintenance and other variables.