SPL Parts FKS Series Front Spherical Caster Rod Bushing Set

2014–2018 BMW 328d (F30/F31)

Part #: SPL CRBN F3IX

Overview

The SPL Parts FKS Series Front Spherical Caster Rod Bushing Set is designed to enhance the handling and steering precision of your BMW 328d, specifically for model years 2014 through 2018. These high-performance bushings replace the factory rubber components with precision-engineered spherical bearings, providing a significant upgrade in suspension responsiveness. Whether you're a spirited street driver, a track enthusiast, or someone looking to improve their vehicle's overall handling, this bushing set offers a reliable and durable solution.

By upgrading to these spherical bushings, you'll experience more direct steering feedback, reduced bushing deflection under load, and improved stability during aggressive driving. This results in sharper turn-in, better cornering grip, and more consistent suspension geometry, helping you get the most out of your vehicle's chassis. Designed with durability and performance in mind, these bushings are ideal for enthusiasts seeking to optimize their BMW's suspension for both daily driving and spirited performance.

Key Features

The SPL Parts FKS Series Front Spherical Caster Rod Bushings incorporate several advanced features to deliver maximum performance and longevity:

• Constructed with massive 1" FK Racing Bearings featuring self-lubricating Teflon liners for reduced friction and long-lasting durability.
• Made from high-quality 6061-T6 aluminum, these bushings are lightweight yet incredibly strong, ensuring reliable performance under demanding conditions.
• Replace the stock flexible rubber bushings with low-friction spherical bearings, eliminating bushing deflection and maintaining optimal suspension geometry under load.
• Designed for precise articulation, these bushings help improve steering response and feedback, especially during aggressive driving or cornering.
• Engineered to withstand harsh driving environments, providing consistent performance over time with minimal maintenance.
• Manufactured with CNC machining for perfect fitment and finish, ensuring seamless installation and long-term reliability.

Construction & Design

The SPL Parts FKS Series bushings feature a robust construction that combines high-grade materials for maximum strength and durability. The core spherical bearings are crafted from 6061-T6 aluminum, a material renowned for its excellent strength-to-weight ratio and corrosion resistance. The bearings themselves are 1" FK Racing units with self-lubricating Teflon liners, which significantly reduce friction and wear, ensuring smooth articulation and consistent performance over time.

The design eliminates the flexibility and deflection associated with rubber bushings, providing a more direct connection between the suspension components. This results in improved steering feel, reduced understeer or oversteer tendencies, and enhanced overall handling. The CNC-machined components ensure precise fitment, while the use of high-quality materials guarantees longevity even under aggressive driving conditions.

Performance & Handling

Replacing factory rubber bushings with these spherical bearings offers noticeable improvements in suspension response and steering accuracy. The reduction in bushing deflection means your vehicle maintains better alignment and suspension geometry during cornering and load transfer. This translates into more predictable handling, increased grip, and a more confident driving experience. The high-quality FK Racing bearings ensure minimal friction, allowing for smoother articulation and better feedback from the road.

Installation & Fitment

The SPL Parts FKS Series Front Spherical Caster Rod Bushing Set is designed as a direct bolt-on upgrade for the specified BMW models. Installation typically requires basic hand tools and some mechanical knowledge. The bushings are engineered to fit precisely into the factory mounting points, with no need for modifications or cutting. While some alignment adjustment may be recommended after installation, the process is straightforward for experienced DIY enthusiasts or professional technicians. No special tuning is required to benefit from the improved handling characteristics.

• Easy bolt-on installation with standard hand tools
• No cutting, drilling, or complex modifications necessary
• Designed for a secure, precise fit to ensure maximum performance

What's Included

• Set of front spherical caster rod bushings with FK Racing bearings
• High-quality aluminum housings
• All necessary hardware and mounting components
• Installation instructions (if provided)

Ideal For

This bushing set is perfect for BMW owners who want to improve their vehicle's steering response, handling, and overall suspension performance. It is especially beneficial for those who participate in spirited driving, track days, or who simply desire a more connected and precise driving experience. Suitable for street use and track days alike, these bushings are a reliable upgrade for enthusiasts seeking durability and performance.