Whiteline Front Upper Control Arm Bushings

2003–2010 Mazda RX-8 / 2006–2010 Mazda Miata

Part #: W53415

Overview

The Whiteline Front Upper Control Arm Bushings are designed to enhance the handling and stability of your Mazda RX-8 and Mazda Miata. These high-quality polyurethane bushings replace the factory rubber components, providing improved responsiveness and more precise steering feel. Whether you're a spirited driver, a track enthusiast, or someone looking to restore the original handling characteristics of your vehicle, these bushings are an excellent upgrade.

Constructed for durability and performance, Whiteline's control arm bushings help reduce unwanted flex and suspension deflection, resulting in sharper turn-in and better overall control. They are ideal for drivers seeking to improve their vehicle's handling dynamics without sacrificing ride comfort or reliability.

Key Features

Whiteline's expertise in suspension components ensures that these bushings deliver noticeable handling improvements. Crafted from premium polyurethane, they offer a significant upgrade over the stock rubber bushings by providing increased stiffness and longevity. The bushings are engineered to maintain proper suspension geometry, helping support your vehicle's alignment and handling characteristics.

• Made from high-grade polyurethane for enhanced durability and performance
• Designed to replace the factory inner rear control arm bushings on Mazda RX-8 and Mazda Miata (2003-2010, 2006-2010 respectively)
• Reduces suspension flex for improved steering response and cornering stability
• Helps support better handling and vehicle control during spirited driving or track use
• Manufactured by Whiteline, a trusted name in performance suspension parts
• Easy to install with standard tools, with no modifications required
• Resistant to wear, oil, and other environmental factors for long-lasting performance

Construction & Design

These control arm bushings feature a precision-engineered polyurethane formulation that balances stiffness with flexibility, ensuring a firm yet comfortable ride. The bushings are molded to exact specifications to fit perfectly into the factory control arms, maintaining proper suspension geometry. Their one-piece design enhances strength and durability, while the high-quality materials resist deformation over time. The bushings are designed to withstand harsh driving conditions, including exposure to oil, dirt, and temperature fluctuations, making them suitable for both daily driving and aggressive track sessions.

Installation & Fitment

The Whiteline Front Upper Control Arm Bushings are designed as direct replacements for the original factory components. Installation is straightforward for those with basic suspension knowledge and tools. No cutting, drilling, or complex modifications are required. It is recommended to perform a proper suspension alignment after installation to ensure optimal handling and tire wear. The bushings fit precisely into the control arms, restoring or improving the factory suspension geometry.

• Direct bolt-on replacement for the inner rear control arm bushings
• Installation typically requires standard hand tools and a press or bushing removal/installation tool
• Complete your suspension refresh or upgrade with confidence in fitment and performance

What's Included

• Set of polyurethane control arm bushings for the inner rear position
• Installation instructions (if provided)

Ideal For

• Enthusiasts seeking improved handling and steering response
• Owners restoring or upgrading their Mazda RX-8 or Mazda Miata suspension
• Drivers who want a more precise and connected driving experience
• Track day participants and spirited drivers