• COBB Rear Inner Offset Control Arm Bush | Subaru WRX/STI (15-21) (CB-4428K)
  • COBB Rear Inner Offset Control Arm Bush | Subaru WRX/STI (15-21) (CB-4428K)
  • COBB Rear Inner Offset Control Arm Bush | Subaru WRX/STI (15-21) (CB-4428K)
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COBB Rear Inner Offset Control Arm Bush | Subaru WRX/STI (15-21) (CB-4428K)

COBB Rear Inner Offset Control Arm Bush | Subaru WRX/STI (15-21) (CB-4428K)

CB-4428K

In stock

$270.00 USD
$270.00 USD $270.00 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Cobb Control Arm Inner Rear Offset Bushing for 2015–2021 Subaru WRX and WRX STI is a precision-engineered suspension upgrade designed to replace worn factory bushings. This high-performance component enhances handling accuracy and steering response by reducing deflection in the rear control arms. Constructed with a hybrid design combining durable metal and 72a durometer polyurethane, the bushing kit also incorporates high-performance bearings to deliver improved vehicle stability and sharper control. This combination ensures long-lasting durability while maintaining a responsive and connected driving feel, ideal for enthusiasts seeking enhanced suspension performance without sacrificing daily drivability.

This bushing kit is specifically engineered for the 2015–2021 Subaru WRX and WRX STI models, providing a direct replacement for the inner rear control arm bushings. Installation is straightforward, designed to fit seamlessly into the existing suspension setup without requiring modifications. The kit includes all necessary components to upgrade the rear control arm bushings, making it suitable for street driving, spirited road use, and track applications. Its robust construction and precise fitment ensure compatibility with stock and lightly modified suspension systems, delivering consistent performance improvements across various driving conditions.

Overview

COBB Control Arm Inner Rear Offset Bushing

Fitment: 2015-2021 Subaru WRX / 2015-2021 Subaru WRX STI

Part #: CB-4428K

Overview

The COBB Control Arm Inner Rear Offset Bushing is a precision-engineered suspension upgrade designed specifically for 2015-2021 Subaru WRX and WRX STI models. This component replaces the factory inner rear bushings on the control arms to enhance your vehicle’s handling dynamics and steering response. Ideal for enthusiasts seeking sharper control and improved stability, this bushing supports a more connected and confident driving experience on both street and track.

Constructed with a metal and polyurethane hybrid design, the bushing balances durability with performance, helping to reduce unwanted flex and improve suspension feedback. This upgrade is perfect for drivers who want to maintain daily drivability while gaining enhanced precision during spirited driving.

Key Features

Designed to deliver improved suspension performance, the COBB Control Arm Inner Rear Offset Bushing offers the following key features:

  • Hybrid construction combining metal components with 72a durometer polyurethane for optimal stiffness and longevity
  • High-performance bearings integrated to reduce friction and maintain smooth articulation
  • Offset design engineered to improve rear suspension geometry and enhance steering response
  • Direct replacement for factory bushings, ensuring proper fitment and ease of installation
  • Durable materials that resist wear and degradation under demanding driving conditions

Installation & Fitment

This bushing kit is designed as a direct fit for the inner rear control arm position on 2015-2021 Subaru WRX and WRX STI models. Installation typically requires suspension disassembly and should be performed by a qualified technician or experienced enthusiast. Proper fitment should be verified against your vehicle’s specifications and part number to ensure compatibility.

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