HKS 2.1L High Compression Step 1 FA20 Stroker Replacement Connecting Rod Set

2013–2021 Subaru BRZ / 2013–2016 Scion FRS / 2017–2021 Toyota 86 2.0L FA20

Part #: 23004-AT001

Overview

The HKS 2.1L High Compression Step 1 FA20 Stroker Replacement Connecting Rod Set is a precision-engineered component designed specifically for enthusiasts seeking to upgrade their Subaru BRZ, Scion FRS, or Toyota 86 with a reliable and high-performance connecting rod. This kit is intended as a direct replacement for the rods in the HKS 21004-AT002 / 21004-AT003 stroker kits, making it ideal for those who want to maintain or enhance their engine's performance without altering the original block or requiring extensive modifications.

Built with high-strength materials and a focus on durability, these connecting rods are perfect for street-driven cars, spirited driving, and moderate track use. They help support increased horsepower and torque by improving the engine's internal stability during high-rev conditions, ensuring your vehicle maintains reliable performance under demanding conditions.

Key Features

Designed with performance and durability in mind, the HKS FA20 Stroker Connecting Rods offer several key features:

• High-strength I-Beam construction provides excellent strength-to-weight ratio, supporting higher power outputs and aggressive driving styles.
• Specifically designed to accommodate the longer stroke of the 2.1L FA20 engine, with special-size crank pins that eliminate the need for modifications to the engine block.
• Precision-machined for perfect fitment and balanced to ensure smooth operation at high RPMs, reducing vibrations and enhancing engine longevity.
• Made from durable materials that withstand high temperatures and stresses associated with forced induction or high compression setups.
• Stock bore compatibility ensures straightforward installation without the need for bore resizing or additional machining.
• Optimized for use with high-performance pistons and other internal components to maximize engine efficiency and power potential.
• Designed to support high compression ratios, making them suitable for custom builds and performance tuning.

Construction & Design

The HKS FA20 Connecting Rod Set features a robust I-Beam design, which is well-regarded in performance applications for its strength and weight savings. Crafted from high-quality steel alloys, these rods are engineered to withstand the increased stresses of a stroked engine setup. The precision machining ensures a perfect fit with minimal clearances, contributing to optimal engine balance and reduced wear over time.

The rods incorporate special-sized crank pins tailored for the 2.1L stroker crankshaft, allowing for a seamless fit without the need for engine block modifications. This thoughtful design simplifies installation and ensures compatibility with existing HKS stroker kits, making it an excellent choice for builders aiming for a reliable, high-performance upgrade.

Installation & Fitment

The HKS 2.1L FA20 Stroker Connecting Rod Set is a bolt-in replacement for the rods in the specified HKS stroker kits. No modifications to the engine block are required, simplifying the installation process for experienced engine builders or professional mechanics. Proper torque specifications and assembly procedures should be followed to ensure optimal performance and longevity. As these rods are designed for high-performance applications, it is recommended to have the engine properly tuned after installation to maximize benefits.

• Direct replacement for the rods in HKS 21004-AT002 / 21004-AT003 stroker kits
• No cutting, drilling, or extensive modifications needed
• Ideal for street, spirited driving, and moderate track use

What's Included

• Set of high-strength I-Beam connecting rods
• Installation hardware and instructions (if applicable)

Ideal For

This connecting rod set is perfect for Subaru BRZ, Scion FRS, and Toyota 86 owners who are building or upgrading their engines with a 2.1L stroker kit. It is suitable for enthusiasts aiming for increased engine durability, higher power output, and reliable performance during spirited driving or moderate track days.