GX270-390, V-Twin series

Honda’s Variable Timing Digital CDI ignition allows optimal ignition timing based on engine speed. The result:

• Excellent starting,
• High power output,
• Reduced fuel consumption, and
• Outstanding emissions performance.

An engine rev limiter is also incorporated to prevent over-revving.

V-Twin Series

Honda’s hemispherical combustion chamber was inspired by our proven racing technology. It offers the highest V-Twin compression ratio on the market.

The power is transmitted through forged-steel connecting rods and a forged-steel crankshaft, supported by a full-pressure lubrication system.

• 9.3:1 compression ratio generates tremendous power
• Excellent combustion efficiency
• Allows a radial configuration to create high volumetric efficiency
• Places the spark plug near the center of the chamber for optimal flame travel

This means increased engine efficiency and more power to your application.

The idea of integrating the cylinder and head into one unit is radical. Radically smart. It eliminates the head gasket, head bolts, and allows for more airflow and better cooling.

Speaking of cooling, improved cooling means better combustion management. Cooling is also improved by each of the lightweight aluminum pushrods being housed in a separate tube to achieve enhanced airflow.

When you put it all together (with fewer parts) you get an engine with reduced emissions and greater-than-ever durability.

V-Twin Series

The lubrication system uses a high-capacity pump with discrete chambers. This facilitates consistent oil delivery.

The high output oil pump offers numerous benefits:

• Twice the capacity of the previous model
• Redesigned pump cover and sealing system ensure engine reliability
• Full pressure lubrication to the flywheel, PTO, and connecting-rod bearings

The result?

• Reduced friction
• Extended engine life
• Less mechanical engine noise

GX series, V-Twin series

Honda’s Oil Alert system helps to prevent engine seizure due to a low oil condition.

The system consists of an oil level sensor inside the crankcase. When the oil reaches a level that is too low for safe operation, the engine warns you or stops automatically.

All engines

Honda’s automatic mechanical decompression system is designed to give you quicker, easier starts.

This system, which is connected to the camshaft, reduces compression by opening the exhaust valve slightly when the engine is being started. This reduces the amount of force needed to start the engine and improves starting performance.

The system disengages automatically after the engine starts to prevent any power loss during normal operation.