Cusco Rear Lower Arm (Lateral Link)

2015–2025 Mazda MX-5 IV (ND) 2.0L / 2.0L Turbo

Part #: 429 474 B

Overview

The Cusco Rear Lower Arm (Lateral Link) is a high-performance suspension component designed specifically for the Mazda MX-5 IV (ND) model years 2015 and onward. Crafted to enhance your vehicle's handling and stability, this lateral link plays a crucial role in maintaining proper wheel alignment and suspension geometry during spirited driving or motorsport activities. Whether you're a track enthusiast, a dedicated autocrosser, or a street driver seeking improved responsiveness, this component offers a significant upgrade over the factory parts.

By replacing the factory rear lower arm with Cusco's precision-engineered part, you'll experience more direct steering feel, reduced body roll, and improved cornering performance. This part is ideal for drivers who demand more from their MX-5, especially when combined with other high-performance modifications such as upgraded tires or coilovers. The Cusco lateral link helps support aggressive driving styles while maintaining the reliability and durability needed for demanding conditions.

Key Features

The Cusco Rear Lower Arm is built with high-quality materials and advanced manufacturing techniques to ensure durability and precise fitment. Its key features include:

• Constructed from lightweight yet strong steel to withstand the stresses of high-performance driving.
• Designed with a high-strength bushing interface that minimizes bushing slop, providing more accurate suspension response.
• Precisely engineered to improve suspension geometry, helping to maintain optimal tire contact patch during cornering.
• Features a corrosion-resistant finish to withstand harsh environments and ensure long-lasting performance.
• Compatible with factory mounting points for a straightforward bolt-on installation.
• Part of Cusco's renowned lineup of suspension components, ensuring quality and performance trusted by motorsport professionals and enthusiasts alike.

Construction & Design

The Cusco Rear Lower Arm is meticulously designed with a focus on strength, weight reduction, and precise fitment. Made from high-grade steel, it features a CAD-developed geometry that enhances suspension articulation and stability. The one-piece construction ensures consistent performance and reduces the risk of failure under high loads. The component's design also incorporates a corrosion-resistant coating, protecting it from rust and environmental damage, which is essential for maintaining performance over time.

Performance & Sound

Installing the Cusco lateral link significantly improves your Mazda MX-5's handling characteristics. You will notice more responsive steering, better turn-in, and increased confidence during aggressive driving. While this part does not directly alter the exhaust sound, the enhanced suspension dynamics contribute to a more connected and engaging driving experience. The improved suspension geometry helps support better tire grip, translating into faster lap times and more precise control on twisty roads or track days.

Installation & Fitment

The Cusco Rear Lower Arm is designed as a direct bolt-on replacement for the factory component, making installation straightforward for those with basic mechanical skills. No cutting, drilling, or modifications are required. It is recommended to perform a proper wheel alignment after installation to ensure optimal handling and tire wear. The process typically involves removing the factory arm and replacing it with the Cusco part using standard hand tools. For best results, professional installation is advised.

• Easy bolt-on installation with factory mounting points
• No cutting or drilling required
• Alignment adjustment recommended after installation

What's Included

• Cusco Rear Lower Arm (Lateral Link) for Mazda MX-5 IV (ND)
• All necessary hardware and mounting components
• Installation instructions

Ideal For

This lateral link is perfect for Mazda MX-5 owners who are looking to improve their vehicle's handling, especially those participating in autocross, track days, or spirited street driving. It is also suitable for enthusiasts upgrading their suspension to achieve more precise control and stability during aggressive maneuvers.

Emissions Note

This product is designed for off-road or racing use only and may not be legal for street use in all regions. Please check local regulations before installation.