1. Home
  2. Engines
  3. Harbor Freight Engines
  4. Predator 420 Engines
  5. Rotating Assembly
  6. GX390/420 69mm Stroker Crankshaft
GX390/420 69mm Stroker Crankshaft
190F-12101A GX390/420 69mm Stroker Crankshaft
Write a Review

GX390/420 69mm Stroker Crankshaft

Part Number: 190F-12101-A
Online Price: $119.99
Wildcat 460 69mm Stroke Crankshaft for Honda GX390 & Predator 420
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

Wildcat 460 69mm Stroke Crankshaft for Honda GX390 & Predator 420 Engines


Upgrade your engine performance with the Wildcat 460 69mm stroke crankshaft, designed as a direct stock replacement for Wildcat 460 engines. This versatile crankshaft can also serve as a “stroker” upgrade for 88mm and 90mm bore big block Honda clones, including GX390 and GX420 engines, boosting displacement, compression, and piston speed for increased power and torque.


Key Benefits:

  • Direct replacement for Wildcat 460 crankshaft
  • Compatible with Honda GX390 and Predator 420 engines
  • Stroker crank option for 88mm, 90mm, and 92mm bore big block Honda clones
  • Increases engine displacement and compression for enhanced performance
  • Improves piston speed and overall engine responsiveness


Displacement Gains with 69mm Stroke Crank:

  • GX390 (88mm Bore): Increases to 420cc
  • GX420 (90mm Bore): Increases to 439cc
  • GX440 (92mm Bore): Increases to 459cc


Perfect for racers, engine builders, and performance enthusiasts seeking a reliable upgrade to maximize their Honda clone engine’s potential.

FAQ

Q1: What engines are compatible with the Wildcat 460 69mm stroke crankshaft?

A: It fits Wildcat 460 stock engines and can be used as a stroker upgrade for Honda GX390 (88mm bore), Predator 420 (90mm bore), and GX440 (92mm bore) engines.


Q2: What performance benefits does the 69mm stroke crankshaft provide?

A: It increases engine displacement, compression, and piston speed, resulting in higher power output and improved throttle response.


Q3: Can this crankshaft be used in stock bore engines?

A: Yes, it is compatible with stock bore Wildcat 460 engines and also works with oversized bore engines as a stroker upgrade.


Q4: Will I need additional parts to install this crankshaft?

A: Depending on your setup, you may need compatible connecting rods, pistons, or gaskets designed for stroker builds. Always check compatibility before installation.


Q5: Is this crankshaft suitable for racing applications?

A: Absolutely. The Wildcat 460 69mm stroke crankshaft is popular among racers and performance enthusiasts looking to increase displacement and engine efficiency.

Related Items

Recently Viewed Items

Logo