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6252 ARC Billet Rod,+.040" Predator 3.348" X 1.191" X .709"
6252 ARC Billet Rod,+.040" Predator 3.348" X 1.191" X .709"

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6252 ARC Billet Rod,+.040" HF Predator 3.348" X 1.191" X .709"

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The ARC 6252 billet connecting rod is a +.040" long upgrade for Predator 212 engines, designed to optimize piston deck height when using a flat-top piston. Precision-machined from 7075-T651 aluminum, it delivers superior strength for high-RPM performance builds. Designed for Non-Hemi Predator engines only. See full product details below.

SKU: 6252
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ARC 6252 Billet Connecting Rod (+.040)

The ARC 6252 billet connecting rod is a high-performance upgrade for Harbor Freight Predator 212cc engines, designed specifically for builds using a flat-top piston in a Non-Hemi configuration.

With a 3.348" center-to-center length (+.040" over stock), this rod is commonly used to bring the piston to or near zero deck height when paired with a flat-top piston, improving compression efficiency and overall engine performance.

CNC machined from 7075-T651 aircraft-grade aluminum, this rod offers an excellent strength-to-weight ratio, making it ideal for high RPM racing and performance applications.

ARC’s forced oiling dipper system improves lubrication at the crank journal, helping reduce wear and increase reliability under load. Includes precision bearing inserts and high-strength ARP rod bolts.

Key Features

  • +0.040" longer than stock for improved piston deck height
  • 3.348" center-to-center length
  • Fits 1.188" rod journal and .709" wrist pin
  • Designed for flat-top piston applications
  • Constructed from 7075-T651 aircraft-grade aluminum
  • Includes bearing inserts and ARP rod bolts
  • Forced oiling dipper for superior lubrication
  • Precision CNC machined for durability and consistency

Performance Characteristics

  • Brings piston closer to zero deck height
  • Improves compression and combustion efficiency
  • Supports high-RPM performance builds
  • Enhances durability under load

Fitment

  • Harbor Freight Predator 212cc (Non-Hemi ONLY)

Important Fitment Notice: Designed for Non-Hemi Predator engines only. Will NOT work in Hemi blocks. Will NOT fit Honda GX200, 196cc clone engines, Predator Ghost 212, or Predator 224 crankshafts.

Important Notes

  • Designed for use with stock crankshaft and flat-top pistons
  • Commonly used with Hemi-style flat-top piston in Non-Hemi builds
  • Recommended oil clearance: .0025"–.0035"
  • Rod bolt torque specification: 170 in/lbs (lubricated)
  • Always use engine oil during assembly — do not use assembly lube
  • Proper measuring tools required (micrometer, bore gauge, or plastigauge)

Frequently Asked Questions

What engine is the ARC 6252 rod designed for?

This rod is designed for Predator 212 Non-Hemi engines and is not compatible with Hemi blocks.

Why is this rod +.040" longer than stock?

The extra length helps bring a flat-top piston closer to zero deck height, improving compression and performance.

What piston should I use with this rod?

This rod is commonly used with a flat-top piston, especially Hemi-style pistons installed in Non-Hemi engines.

What wrist pin size does this rod use?

It uses a .709" wrist pin, compatible with standard Predator 212 pistons.

What torque should be used on the rod bolts?

ARC recommends tightening the rod bolts to 170 in/lbs (lubricated).

Compatible Engine Platforms

  • Predator 212cc Non-Hemi

Complete your engine build with ARC Racing components including billet flywheels, high-performance camshafts, and valve springs. Pair this rod with a flat-top piston and upgraded crankshaft components for maximum compression and performance.

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