SPL Parts FKS Series Front Spherical Caster Rod Bushing Set

2014–2016 BMW 335i GT xDrive (F34) / 2013–2015 BMW 335i (F30) 3.0L Turbo

Part #: SPL CRBN F3IX

Overview

The SPL Parts FKS Series Front Spherical Caster Rod Bushing Set is a high-performance upgrade designed specifically for BMW enthusiasts seeking improved handling and suspension precision. Compatible with the 2014–2016 BMW 335i GT xDrive (F34) and the 2013–2015 BMW 335i (F30) with a 3.0L turbocharged engine, this set replaces the factory rubber bushings with low-friction, articulating spherical bearings. The result is a more responsive, predictable suspension that maintains optimal geometry under load, enhancing both braking and steering feedback.

Whether you're a spirited driver, track enthusiast, or someone looking to improve daily driving dynamics, these bushings deliver a significant upgrade over stock components. By eliminating bushing deflection and reducing friction, you'll experience sharper turn-in, more precise steering, and improved overall handling characteristics. Designed with durability and performance in mind, this set is an essential upgrade for those committed to maximizing their BMW's chassis responsiveness.

Key Features

The SPL Parts FKS Series Front Spherical Caster Rod Bushing Set incorporates advanced materials and engineering to deliver superior performance:

• Constructed with massive 1" FK Racing Bearings featuring self-lubricating Teflon liners, ensuring smooth articulation and long-lasting durability.
• Utilizes high-quality 6061-T6 aluminum for the bearing housings, providing excellent strength-to-weight ratio and corrosion resistance.
• Designed to replace the factory flexible rubber bushings, converting the suspension to a spherical bearing setup for minimal deflection under load.
• Reduces friction and binding within the suspension, resulting in more direct and predictable steering response.
• Engineered to maintain proper suspension geometry, preventing alignment changes during aggressive driving or cornering.
• Precision CNC-machined components ensure perfect fitment and ease of installation.
• Enhances handling feedback and braking stability, especially during spirited driving or track use.
• Built to withstand the rigors of high-performance driving, with materials chosen for maximum wear resistance and longevity.
• Designed specifically for the F30 and F34 chassis, ensuring compatibility and optimal performance.

Construction & Design

The SPL Parts FKS Series bushings feature a robust design centered around high-quality spherical bearings. The 1" FK Racing Bearings are crafted from hardened steel with self-lubricating Teflon liners, providing smooth articulation and reducing maintenance needs. The bearing housings are machined from 6061-T6 aluminum, offering excellent strength and corrosion resistance while keeping weight to a minimum. The components are CNC-machined for precise fitment, ensuring seamless integration into your vehicle's suspension system.

This design eliminates the flex and deflection inherent in rubber bushings, allowing for more accurate suspension geometry during dynamic driving conditions. The spherical bearings provide a direct connection between the caster rods and the chassis, translating to more immediate feedback and improved handling response. The use of high-quality materials and meticulous manufacturing processes ensures durability and consistent performance over time, even under demanding driving scenarios.

Installation & Fitment

The SPL Parts FKS Series bushings are designed as a direct bolt-on upgrade for the specified BMW models. Installation typically requires basic hand tools and a suspension alignment afterward to ensure proper setup. No modifications such as cutting or drilling are necessary, making this a straightforward upgrade for experienced DIY enthusiasts or professional installers. Proper installation ensures maximum performance benefits and longevity of the components.

• Complete bolt-on installation with no need for additional modifications.
• Requires suspension alignment after installation to restore optimal geometry.

What's Included

• Set of front spherical caster rod bushings with FK Racing Bearings
• High-quality aluminum bearing housings
• All necessary hardware and mounting components
• Installation instructions

Ideal For

• BMW enthusiasts seeking improved handling and steering response
• Track day and spirited driving applications
• Owners looking to upgrade suspension components for better durability and performance
• Performance-oriented street drivers