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EC Long 13mm Wrist Pin for 76mm EC Piston
EC Long 13mm Wrist Pin for 76mm EC Piston
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EC Long 13mm Wrist Pin for 76mm EC Piston

Part Number: 76WRP
Online Price: $9.99
EC 13mm Long Wrist Pin for EC 76mm Piston | Lightweight & High Strength
Availability: In Stock.

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Description

EC 13mm Long Wrist Pin for EC 76mm Piston – Lightweight, High Strength & Performance Focused


Engineered by EC Carburetors, the 13mm Long Wrist Pin is designed exclusively for the EC 76mm performance piston, with a focus on maximizing engine balance, power, and durability for high-performance karting and small engine racing applications.


Purpose-Built for Performance and Precision

The EC Long Wrist Pin was developed with two performance-driven goals:


1. Reduce Weight & Improve Rotational Balance

Weighing just 22 grams, this 13mm wrist pin is significantly lighter than stock Predator or clone wrist pins. The lighter design lowers the overall mass of the rotating assembly, which helps reduce kinetic energy and vibration at high RPMs.

Additionally, the narrower 13mm diameter (vs. the common 18mm in Predator/Clone engines) allows the pin to be positioned closer to the piston crown. This lowers the compression height, which not only shaves more weight but also makes room for longer connecting rods—a proven method to reduce lateral piston loading and engine vibration.


2. Increased Strength Over Aftermarket Alternatives

While many aftermarket performance pistons use 12mm wrist pins (e.g., Wiseco), EC's 13mm design offers a stronger, stiffer structure that holds up under high-stress, high-RPM conditions. The additional stiffness helps protect the piston and rod from distortion during aggressive throttle use, improving durability and engine life.


Wrist Pin Specifications:

  • Length: 44mm
  • Outside Diameter: 13mm
  • Wall Thickness: 2mm
  • Weight: 22g
  • Material: Precision-machined steel
  • Compatibility: EC 76mm piston only


Key Benefits:

  • Lightweight design improves rotating assembly balance
  • Allows longer connecting rods for better piston dynamics
  • Stronger than many 12mm aftermarket wrist pins
  • Reduces vibration and enhances engine smoothness
  • Ideal for kart racing, performance small engines, and high-RPM builds


Expert Tip:

Pair the EC 13mm wrist pin with our 76mm EC piston and billet connecting rods to build a stronger, smoother, and more efficient rotating assembly designed to maximize performance without sacrificing reliability.

FAQ

Q: Will this wrist pin work with stock Predator or clone pistons?
A: No, this 13mm wrist pin is specifically designed for use with EC 76mm pistons and is not compatible with standard cast or aftermarket clone pistons.

Q: Why is a lighter wrist pin better for racing engines?
A: A lighter wrist pin reduces the mass of the rotating assembly, which helps minimize vibration, improve throttle response, and extend engine life at higher RPMs.

Q: What’s the advantage of the 13mm diameter over 12mm pins?
A: The larger diameter provides increased stiffness and strength, which helps prevent flexing and failure during extreme engine loads.

Q: Can I use this wrist pin with a longer rod?
A: Yes! The lower compression height made possible by the smaller pin diameter makes room for longer rods, improving engine smoothness and performance.

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