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66mm Stroke Crankshaft for Predator 420 & Big Block Clone Engines
420cc 66mm Stroker Crankshaft
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66mm Stroke Crankshaft for Predator 420 & Big Block Clone Engines

Part Number: 190F-12100-A
Online Price: $119.99
66mm Stroke Crankshaft for Predator 420 & Big Block Clone Engines – 1" PTO Shaft
Availability: Out of Stock.

Description

66mm Stroke Crankshaft – For Predator 420 & Big Block Clone Engines (1" PTO Shaft)


Restore or build your big block engine with confidence using this 66mm Stroke Crankshaft, designed to fit Predator 420 and other 420cc big block clone engines. With a 1.00-inch PTO (power take-off) shaft, this crankshaft matches the standard output spec found on most factory 420cc engines, offering reliable compatibility and performance.


The 66mm stroke is the OEM stock length for big block engines in this class, making this crankshaft an ideal replacement for worn or damaged components, or a solid base for performance engine builds. Whether you're assembling a kart, mini bike, or custom power equipment, this crankshaft delivers smooth operation and dependable durability.


Key Features:

  • Fits Predator 420 and 420cc Big Block Clone Engines
  • 66mm Stroke: Stock OEM stroke length for most big block models
  • 1.00" PTO Shaft: Standard power output size for compatibility with clutches and pulleys
  • Precision Machined: For smooth engine operation and long-term reliability
  • Great for Rebuilds & Custom Engine Projects

FAQ

Q1: What engines is this crankshaft compatible with?
A: It fits the Predator 420 and most 420cc big block clone engines, including other GX390-style horizontal shaft motors with a 66mm stroke.


Q2: Is 66mm the stock stroke for Predator 420 engines?
A: Yes, 66mm is the OEM stock stroke for the Predator 420 and similar big block engines. This crankshaft matches factory specs.


Q3: What is the size of the PTO shaft?
A: The crankshaft features a 1.00-inch PTO (power take-off) shaft, which is compatible with most standard centrifugal clutches, pulleys, and torque converters.


Q4: Can I use this crankshaft for a performance build?
A: Absolutely. While it's a stock-length crank, it's ideal for reliable rebuilds, custom projects, and even mild performance builds where durability is key.

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