Eagle H-Beam Connecting Rods

2012–2016 Scion FR-S / 2013–2020 Subaru BRZ / 2017+ Toyota 86

CRS5089S3D-1

Overview:

The Eagle H-Beam Connecting Rods are precision-engineered performance components designed specifically for the Subaru FA20 and Toyota 4UGSE engines found in the Scion FR-S, Subaru BRZ, and Toyota 86 models. Crafted from forged 4340 steel, these rods provide exceptional strength and durability, making them ideal for enthusiasts seeking to upgrade their engine’s internal components for competition or high-performance applications.

Whether you are building a track-focused vehicle or enhancing your sports car’s reliability under increased power levels, these connecting rods deliver the robust construction and exacting tolerances needed to handle demanding conditions. They are recommended for competition use and offer a reliable foundation for high-revving, high-stress environments.

Key Features:

These connecting rods incorporate advanced manufacturing techniques and materials to ensure superior performance and longevity:

• Constructed from forged 4340 steel for maximum strength and fatigue resistance.
• Manufactured using a two-piece forging process to optimize structural integrity.
• Fully machined and shot-peened surfaces reduce stress concentrations and improve durability.
• Precision sizing held to exact tolerances for consistent fitment and balanced performance.
• Designed specifically for Subaru FA20 and Toyota 4UGSE engines, ensuring perfect compatibility.
• Torque specifications require 43 ft-lbs using ARP moly lube only for proper installation.
• Weight specification must be provided when ordering to ensure balanced engine assembly.
• Recommended primarily for competition and high-performance use where reliability under stress is critical.

Construction & Design:

The Eagle H-Beam rods utilize a robust two-piece forging process that enhances the rod’s strength and resilience compared to stock components. The 4340 steel material is known for its excellent toughness and fatigue resistance, making it a preferred choice for performance engine builds. Each rod is fully machined to tight tolerances and shot-peened to relieve surface stresses, which helps prevent premature failure during high RPM operation.

This meticulous construction ensures that the rods maintain dimensional accuracy and durability, supporting increased horsepower and torque without compromising engine reliability. The H-beam design offers an optimal balance between weight and strength, providing improved rigidity over traditional I-beam rods while keeping reciprocating mass manageable.

Installation & Fitment:

These connecting rods are direct replacements for the factory rods in the following vehicles:

• 2012–2016 Scion FR-S
• 2013–2020 Subaru BRZ
• 2017 and newer Toyota 86

Installation requires adherence to the specified torque of 43 ft-lbs using ARP moly lube only to ensure proper clamping force and longevity. Weight specification must be provided at the time of order to guarantee balanced engine assembly. These rods are designed for professional installation and engine builds where precision and reliability are paramount.

What's Included:

• Set of forged 4340 steel H-Beam connecting rods
• Fully machined and shot-peened rods ready for installation
• Installation instructions with torque specifications

Ideal For:

These Eagle H-Beam Connecting Rods are ideal for:

• Performance enthusiasts upgrading their Subaru FA20 or Toyota 4UGSE engines
• Track and competition vehicles requiring durable, high-strength internal components
• Engine builders seeking precise, balanced rods for high-revving applications
• Owners looking to improve engine reliability under increased power and stress

Eagle Specialty Products manufactures high-strength engine components—most notably connecting rods and crankshafts—intended for performance and racing engines. These rotating-assembly upgrades are commonly used in builds that demand higher strength margins for boost, nitrous, sustained RPM, or competition use.