COBB Alloy Front Lower Control Arm Complete Offset Caster (CB-ALY0017K) | Subaru WRX 2015-2021 / STI 2015-2021

The COBB Alloy Front Lower Control Arm Complete Offset Caster (CB-ALY0017K) upgrades the front suspension on 2015–2021 Subaru WRX and STI models with a precision-engineered arm assembly designed to increase positive caster for improved handling. Featuring a lightweight alloy construction and performance-oriented bushings, this complete control arm solution enhances steering stability, turn-in sharpness, and overall chassis confidence.

KEY FEATURES

• Complete alloy lower control arm assembly with built-in offset caster geometry
• Increases positive caster for improved steering feel, stability, and cornering grip
• Stronger and more rigid than factory control arms for consistent performance
• Direct-fit installation with pre-installed bushings and ball joints
• Ideal for performance street driving, autocross, and track-focused suspension setups
• Enhances chassis response when paired with upgraded sway bars, coilovers, or bushings

TECHNICAL SPECIFICATIONS

• Offset caster design engineered to increase front-end stability and precision
• Lightweight alloy arm housings for improved rigidity and reduced flex
• High-durometer bushings reduce unwanted movement under braking and cornering
• Precision ball joints ensure accurate steering articulation
• Compatible with OEM knuckles, subframe, and most aftermarket suspension components

VEHICLE FITMENT

• Subaru WRX 2015–2021
• Subaru STI 2015–2021

COBB delivers proven, data-driven performance solutions engineered to optimize your Subaru with unmatched precision and reliability.