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Honda GX390 / Clone 64mm Stock Stroke Crankshaft | Replacement for 13HP Engines
390cc 64mm Stroke Crankshaft
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Honda GX390 / Clone 64mm Stock Stroke Crankshaft | Replacement for 13HP Engines

Part Number: 188F-12100-A
Online Price: $119.99
Honda GX390 / Clone 64mm Stock Stroke Crankshaft | Replacement for 13HP Engines
Availability: In Stock.

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Description

Honda GX390 / Clone Stock Stroke 64mm Crankshaft – OEM Fit for High-Torque Small Engine Builds


Unlock reliable performance with the Honda GX390 / Clone Stock Stroke 64mm Crankshaft, designed for durability and precision in high-demand small engine applications. Whether you're rebuilding a stock GX390 or assembling a clone engine for kart racing, this crankshaft delivers OEM-spec stroke and balance with the strength needed for competitive or utility use.


Key Features:

  • Stock 64mm Stroke: Maintains factory stroke length for compatibility with GX390 and clone engine components, ensuring smooth operation and simplified engine assembly.
  • Precision Machined for Balance & Strength: Manufactured to exacting tolerances to minimize vibration and optimize engine balance for consistent power delivery.
  • Fits Honda GX390 and Clone Engines: Direct replacement for stock GX390 crankshafts, also compatible with most 13HP 389cc Chinese clone engines, commonly used in kart racing, minibikes, and industrial equipment.
  • High-Strength Steel Construction: Built from forged or cast steel (depending on version), capable of handling increased RPM and torque in both stock and mildly modified engine setups.
  • Perfect for Performance or Replacement: Ideal for replacing worn-out crankshafts or as a reliable base for a new high-torque GX390 or 420cc clone build with stock stroke configuration.


Compatible Applications:

  • Honda GX390 13HP OHV engines
  • 389cc clone engines (e.g., 390-based blocks)
  • Go-karts, minibikes, mud motors, generators, and racing lawnmowers


Upgrade or restore your small engine the right way with the Honda GX390 / Clone 64mm Stock Stroke Crankshaft — a perfect balance of factory fit and performance potential.

FAQ

Q1: What is the stroke length of this crankshaft?
A1: This crankshaft has a 64mm stock stroke, the standard factory specification for Honda GX390 and compatible clone engines.


Q2: Which engines is this crankshaft compatible with?
A2: It's designed to fit Honda GX390 (13HP) engines and 389cc/420cc Chinese clones, such as Predator 420, Duromax other GX390-style engines.


Q3: Can I use this crankshaft in a performance build?
A3: Yes! While it's stock stroke, it's ideal for mildly modified or torque-focused performance builds, especially for go-karts, minibikes, or mud motors. Just pair it with the correct rod and piston setup.


Q4: Is this an OEM Honda crankshaft or aftermarket?
A4: No, this is a high-quality aftermarket clone crankshafts with OEM-spec machining.

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