Whiteline Front Roll Center Adjustment Kit

2002–2021 Subaru WRX / WRX STI

Part #: KCA313

Overview

The Whiteline Front Roll Center Adjustment Kit is an essential upgrade for Subaru WRX and WRX STI owners looking to enhance their vehicle's handling dynamics, especially when running lowered suspensions. Designed to correct roll-center geometry and reduce bump steer, this kit helps maintain optimal suspension alignment and tire contact patch during aggressive driving or cornering. Whether you're a spirited street driver, a track enthusiast, or an off-road adventurer, this kit provides improved stability, responsiveness, and overall driving confidence.

By addressing the common issues associated with lowered vehicles—such as increased bump steer and compromised roll-center geometry—the Whiteline kit ensures your vehicle maintains predictable handling characteristics. You'll experience more even weight distribution across all four tires, leading to better grip, reduced tire wear, and a more planted feel during dynamic driving. This correction kit is a must-have for those seeking to maximize their Subaru's performance and handling capabilities.

Key Features

Whiteline's Front Roll Center Adjustment Kit is engineered with precision to deliver reliable, long-lasting performance. Crafted from high-quality materials, it features specially designed ball-joints and tie rod ends that precisely modify the suspension geometry. The kit's components are engineered to withstand the rigors of spirited driving and harsh conditions, ensuring durability and consistent performance over time.

• Engineered to correct roll-center and bump steer issues in lowered Subaru WRX/STi models
• Utilizes specially engineered ball-joints and tie rod ends for precise geometry correction
• Constructed from durable, high-strength materials for long-lasting performance
• Designed to improve front-end stability and reduce suspension compression during cornering
• Helps achieve more even weight distribution and better tire contact with the road
• Compatible with a wide range of Subaru WRX and WRX STI models from 2002 to 2021
• Easy bolt-on installation with no need for extensive modifications
• Contributes to enhanced steering response and overall handling feel
• Reduces the tendency for the outside front wheel to lift or lose contact during aggressive turns

Construction & Design

The Whiteline Front Roll Center Adjustment Kit features a meticulously engineered design that emphasizes durability and precision. The ball-joints and tie rod ends are crafted from high-strength steel and are finished with corrosion-resistant coatings to withstand the elements and road debris. The components are designed with a one-piece construction that ensures a secure fit and reliable performance over time.

The kit's geometry correction capabilities are achieved through carefully calibrated adjustments, allowing for precise tuning of the suspension's roll-center height. This results in improved handling characteristics, especially when the vehicle is lowered, by restoring the suspension's natural geometry and reducing unwanted bump steer. The design also minimizes additional stress on other suspension components, promoting longevity and consistent handling.

Performance & Handling

Correcting the front roll-center and bump steer significantly enhances your vehicle's handling response. Expect more predictable steering feedback, improved turn-in response, and increased front-end grip during aggressive maneuvers. The kit helps maintain proper suspension geometry, which translates into better tire contact with the road surface, especially during cornering. This leads to increased confidence and control, whether on the street or the track.

Installation & Fitment

The Whiteline Front Roll Center Adjustment Kit is designed for a straightforward bolt-on installation. It mounts directly to the factory suspension points using existing hardware, with no need for cutting, drilling, or extensive modifications. Basic mechanical skills and standard tools are sufficient for installation, which can typically be completed within a few hours. No additional tuning or alignment adjustments are required, although a professional wheel alignment is recommended to optimize handling and tire wear after installation.

• Direct bolt-on replacement for factory components
• No cutting, drilling, or complex modifications needed
• Suitable for DIY enthusiasts and professional installers alike
• Alignment check recommended post-installation for optimal performance

What's Included

• Complete front roll center correction kit with ball-joints and tie rod ends
• All necessary mounting hardware and components
• Installation instructions

Ideal For

This kit is ideal for Subaru WRX and WRX STI owners who have lowered their vehicles and want to restore optimal suspension geometry. It is perfect for enthusiasts seeking improved handling, better tire contact, and more predictable steering during spirited driving or track days. Whether you have a mild drop or a more aggressive stance, this correction kit helps maintain the vehicle's handling integrity.