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Stock Piston (Wrist) Pin for Honda GX200/Clone Engines
138190010 Tillotson Clone Piston Wrist Pin
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Stock Piston (Wrist) Pin for Honda GX200/Clone Engines

Part Number: 138190010
Online Price: $2.99
Stock 18mm Piston (Wrist) Pin - Full-Floating for Honda GX200 & Clone Engines
Availability: In Stock.

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Description

Stock Piston (Wrist) Pin for Honda GX200 & Clone Engines – 138190010


The 138190010 wrist pin is a full-floating piston pin commonly used in Honda GX200 and 196cc clone engines. This high-quality pin connects the piston to the connecting rod, allowing smooth, efficient pivoting during engine operation. Precision-machined for durability and consistent fit, it is ideal for stock rebuilds and race-prepped engines within AKRA/NKA guidelines.


Wrist Pin Specifications:

  • Outside Diameter: .707" (designed for .709" piston journal with ~.002" clearance)
  • Inside Diameter: .547"
  • Wall Thickness: .079" (2mm)
  • Length: 2.12" (54mm)
  • Weight: ~45g


Compatible With Stock Pistons In:

  • Honda GX200 / Clone (196cc)
  • Box Stock Project 196
  • Tillotson 196R / 212R
  • Ducar 196
  • Predator 212 (Hemi & Non-Hemi)
  • Wildcat 223 / 240

Fitment Note: This pin is designed for factory-style cast pistons. Always confirm pin diameter and journal sizing before ordering.


Not Compatible With:

This wrist pin does not fit the following engines due to non-standard piston journal specs:

  • Tillotson 212E
  • Tillotson 225–268cc
  • Ducar 212 / 224
  • Predator 224
  • Ghost 212


Rulebook Compliance:

AKRA 2020 Rules for Wrist Pins

Overall length wrist pin 2.100" min, inside diameter .550" max.


NKA 2020 Rules for Wrist Pins

40.4.35: Wrist Pin Dimensions

40.4.35.1: Wrist pin inside diameter: .555" maximum

40.4.35.2: Wrist pin outside diameter: .707" +/-.005"

40.4.35.3: Wrist pin length: 2.100"-2.200"


The 138190010 full-floating wrist pin is a reliable OEM-style replacement for most GX200 and 196cc clone engines. With precise tolerances and race-legal specs, it ensures stable piston-to-rod operation while preventing premature wear in performance or stock rebuilds.

FAQ

1. What engines is this wrist pin compatible with?

This wrist pin fits most OEM pistons found in:

  • Honda GX200 / Clone (196cc)
  • Box Stock Project 196
  • Tillotson 196R / 212R
  • Ducar 196
  • Predator 212 (Hemi & Non-Hemi)
  • Wildcat 223 / 240


2. What size piston journal does it fit?

It’s designed for piston journals measuring .709", offering about .002" clearance, with an outside diameter of .707".


3. Is this wrist pin legal for AKRA and NKA kart racing?

Yes. It meets both AKRA and NKA specs:

  • Length: 2.12" (AKRA min: 2.100")
  • Inside Diameter: .547" (NKA max: .555")
  • Outside Diameter: .707" ± .005"


4. Does this pin fit aftermarket or forged pistons?

This pin is designed for stock cast pistons. Fitment with aftermarket forged pistons may vary—check wrist pin journal diameter before use.


5. What engines are not compatible with this pin?

This wrist pin does not fit:

  • Tillotson 212E
  • Tillotson 225–268cc
  • Ducar 212 / 224
  • Predator 224
  • Ghost 212
    These use different wrist pin specs.

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