COBB 15-21 Subaru WRX & STI/2018 Type RA Alloy Front Lower Control Arm (Complete) STD Alignment COBBCB-ALY0016K

Improve your Subaru's front suspension and handling with the COBB Tuning Alloy Front Lower Control Arm Set, designed for compatible 2015–2021 Subaru WRX and WRX STI models, including the 2018 WRX STI Type RA. These complete front lower control arms feature lightweight alloy construction and upgraded bushings to support more precise suspension control for street and track applications.

The lightweight alloy construction helps reduce unsprung weight compared with the original steel components, while the firmer 94A durometer bushings are designed to improve control of the tire contact patch during cornering and other driving conditions. This combination supports more responsive handling while maintaining a focus on durability and everyday drivability.

This version uses a standard alignment configuration, making it distinct from the COBB offset-caster control arm option. It is designed for drivers seeking upgraded front suspension components without the additional caster adjustment associated with the offset-caster version.

Whether you're refreshing your suspension or building a performance-focused WRX or STI, COBB Tuning's complete alloy front lower control arms provide a handling-oriented upgrade suitable for compatible street and track setups.

Key Features

• Brand: COBB Tuning

• Product: Complete Alloy Front Lower Control Arm Set

• Part Number: CB-ALY0016K

• Lightweight alloy construction.

• Designed to be stronger than the original steel construction, according to COBB.

• Upgraded 94A durometer bushings.

• Helps improve suspension control and handling response.

• Designed to support tire contact patch control.

• Standard alignment configuration.

• Suitable for compatible street and track applications.

• Complete front lower control arm assembly.

• Designed for specified Subaru WRX and WRX STI applications.

Technical Specifications

• Manufacturer: COBB Tuning

• Part Number: CB-ALY0016K

• Product Type: Front Lower Control Arms

• Installation Position: Front

• Construction: Lightweight alloy

• Bushing Durometer: 94A

• Alignment Configuration: Standard alignment

• Quantity: Confirm package contents; this product is listed as a complete set.

• Emissions: Not an emissions-related part, according to COBB Tuning.

Fitment

• 2015–2021 Subaru WRX

• 2015–2021 Subaru WRX STI

• 2018 Subaru WRX STI Type RA

• 2019 Subaru WRX STI S209

Important Fitment Note: Confirm compatibility with your exact model year, chassis, and suspension configuration before ordering. This is the standard-alignment version, part number CB-ALY0016K. Do not confuse it with the separate offset-caster version, which uses a different part number and rear bushing configuration.

Installation & Compatibility Notes

• Designed to replace compatible factory front lower control arms.

• Confirm that the vehicle matches the specified model-year and chassis applications.

• Inspect related ball joints, mounting hardware, and suspension components during installation.

• Follow COBB Tuning's installation instructions and specified torque settings.

• A professional installation is recommended.

• Check wheel alignment after installation.

• Confirm compatibility with any existing aftermarket suspension components before purchase.