GX200 Crankshaft Specs and Fitment
Understanding crankshaft specifications ensures proper compatibility with your engine:
- Stock Stroke: Approximately 2.123 - 2.125 inches
- PTO Size: Must match your clutch or torque converter
- Rod Journal Size: Must match your connecting rod 1.180 MAX
- Engine Compatibility: GX200 and most 196cc clone engines
Matching these specs is essential for correct installation and long-term reliability.
OEM vs Performance Crankshafts (Know the Difference)
OEM GX200 crankshafts are designed for stock engine performance and reliability.
Unlike performance crankshafts:
- OEM crankshafts are not dynamically balanced for high RPM racing
- They are not intended for extreme performance builds
- They are designed for standard operating conditions and longevity
If you are building a high-performance or racing engine, a billet or performance crankshaft may be required. For standard rebuilds and everyday use, OEM crankshafts are the correct choice.
Compatible Engines and Applications
GX200 crankshafts are widely used in:
- Honda GX200 engines
- 196cc clone engines
- Go-karts and minibikes
- Utility and recreational small engines
They are ideal for restoring engines used in both work and recreational applications.
Why Choose GX200 Crankshafts
Crankshafts are manufactured for consistency and reliability:
- Built to OEM specifications for proper fitment
- Trusted for engine rebuilds and replacements
- Designed for durability in standard operating conditions
Our components are relied on by engine builders and small engine enthusiasts who need dependable parts that fit correctly and perform as expected.
Find the Right GX200 Crankshaft for Your Engine
Choosing the correct GX200 crankshaft ensures your engine runs properly and reliably.
Whether you're completing a rebuild or replacing a damaged component, ARC Racing offers OEM-quality crankshafts designed for straightforward installation and long-term use.
GX200 Crankshaft FAQ
What does a GX200 crankshaft do?
It converts the up-and-down motion of the piston into rotational force to power the engine.
What is the stock GX200 crankshaft stroke?
Approximately 2.123 - 2.125 inches.
Are OEM crankshafts balanced?
OEM crankshafts are manufactured to factory balance standards but are not dynamically balanced like performance crankshafts.
Do I need a performance crankshaft?
For standard use and rebuilds, an OEM crankshaft is the best choice.
Billet Flywheels for GX340 / GX390 Performance Engines
ARC Racing billet flywheels for Honda GX340 and GX390 engines are engineered for strength, durability, and reliable ignition performance in high-RPM racing engines. CNC-machined from 6061-T6 billet aluminum and SFI certified, these flywheels provide a high-strength replacement for factory cast flywheels.
Many ARC GX340 and GX390 flywheels feature rare-earth magnets that produce a powerful magnetic signal to the ignition coil, delivering a hotter and more consistent spark. Some models also include adjustable timing hubs that allow engine builders to fine-tune ignition timing for specific racing setups.
Compatible Engine Platforms
- Honda GX340 Engines
- Honda GX390 Engines
- Predator 420 Engines
- 460cc Big Block Engines
These engines are commonly used in kart racing, mini bikes, racing mowers, and other high-performance small engine builds where durable rotating components and reliable ignition timing are critical for safe operation.
Why Choose ARC GX340 / GX390 Flywheels?
- Precision-machined billet aluminum construction
- SFI certified for racing safety
- Strong rare-earth magnets for reliable spark output
- Adjustable timing options available on select models
- Designed for high-RPM performance engines
Whether you're building a kart racing engine, mini bike performance build, or racing mower engine, ARC Racing billet flywheels deliver the durability, ignition stability, and performance serious engine builders demand.
GX340 / GX390 Flywheels – Frequently Asked Questions
Why upgrade to a billet flywheel?
Billet flywheels are significantly stronger than stock cast flywheels. Upgrading to an ARC billet flywheel improves ignition stability and allows engines to safely operate at higher RPM in racing applications.
What engines do these flywheels fit?
ARC GX340 / GX390 billet flywheels are designed for Honda GX340, Honda GX390, Predator 420, and other similar big-block small engines.
Do ARC flywheels allow timing adjustment?
Some ARC flywheels use adjustable timing hubs that allow ignition timing to be advanced or retarded in small increments for performance tuning.
Do billet flywheels increase horsepower?
Billet flywheels do not directly increase horsepower, but they improve ignition stability and allow engines to safely operate at higher RPM in performance and racing applications.
Are ARC flywheels used in racing engines?
Yes. ARC billet flywheels are widely used in kart racing, mini bike engines, racing mower engines, and other high-performance small engine builds.