Whiteline Front Lower Radius Arm Bushing Kit

2019–2025 BMW Z4 / 2020–2026 Toyota Supra

Part #: KCA495

Overview

The Whiteline Front Lower Radius Arm Bushing Kit is a high-performance upgrade designed specifically for the BMW Z4 (2019-2025) and Toyota Supra (2020-2026). This kit replaces the factory bushings with premium synthetic elastomer components that enhance your vehicle's handling, stability, and steering feedback. Whether you're a spirited driver, a track enthusiast, or someone seeking improved everyday driving dynamics, this bushing kit offers a significant upgrade over OEM parts.

By increasing static caster and dynamic negative camber gain, Whiteline's caster kits help improve cornering grip and vehicle straight-line stability. The result is more precise steering response, reduced body roll, and enhanced overall control. Additionally, the synthetic elastomer bushings are engineered to provide better steering feedback and braking performance, giving you more confidence behind the wheel. This upgrade is ideal for drivers looking to optimize their vehicle's handling characteristics without sacrificing ride comfort.

Key Features

Whiteline's caster kits are crafted with durability and performance in mind, utilizing advanced materials and engineering techniques to deliver superior results. The synthetic elastomer construction of the bushings is more durable than OEM rubber, offering increased resistance to wear, heat, and harsh driving conditions. This ensures long-lasting performance and consistent handling characteristics over time.

• High-quality synthetic elastomer bushings that improve steering feedback and braking response
• Designed to increase static caster and dynamic negative camber gain for enhanced cornering grip
• Made with durable materials that outperform OEM rubber bushings in wear and heat resistance
• Precision-engineered for a perfect fit and easy installation, with installer-friendly design
• Helps improve vehicle stability, handling, and overall driving feel
• Suitable for street driving, spirited driving, and track use
• Manufactured by Whiteline, a trusted name in suspension and chassis performance parts

Construction & Design

The Whiteline Front Lower Radius Arm Bushing Kit features a robust construction utilizing synthetic elastomer, which offers a significant upgrade over traditional rubber bushings. These bushings are designed with a focus on durability, heat resistance, and consistent performance. The kit's components are precisely engineered to fit seamlessly into your vehicle's existing suspension geometry, ensuring a straightforward installation process.

The design enhances static caster and negative camber gain dynamically during cornering, which translates into improved grip and stability. The use of high-quality materials and advanced manufacturing techniques ensures that these bushings maintain their shape and performance characteristics even under demanding driving conditions. This results in a more responsive and predictable handling experience, whether on the street or the track.

Installation & Fitment

The Whiteline Front Lower Radius Arm Bushing Kit is designed for a direct bolt-on installation, making it accessible for most DIY enthusiasts and professional mechanics. No cutting, drilling, or complex modifications are required. The kit includes all necessary hardware and instructions for a straightforward upgrade. Proper installation ensures optimal performance and longevity of the bushings, so following the provided guidelines or consulting a professional is recommended.

• Easy, bolt-on installation with standard tools
• No cutting, drilling, or special tuning required
• Designed to fit precisely into OEM suspension points for a secure and reliable upgrade

What's Included

• Complete front lower radius arm bushing kit with synthetic elastomer bushings
• All necessary hardware and mounting components
• Installation instructions

Ideal For

• Enthusiasts seeking improved handling and steering feedback
• Drivers looking to enhance cornering grip and vehicle stability
• Owners of BMW Z4 (2019-2025) and Toyota Supra (2020-2026) wanting a durable suspension upgrade
• Track day participants and spirited street drivers