SPL Parts FKS Series Front Caster Rod Bushing Set

2015–2016 BMW 435i xDrive Gran Coupe (F36) / 2013–2015 BMW 335i (F30) 3 Series

Part #: SPL CRBN F3IX

Overview

The SPL Parts FKS Series Front Caster Rod Bushing Set is designed to enhance the handling and steering response of your BMW by replacing the factory rubber bushings with high-performance spherical bearings. Specifically engineered for the 2015–2016 BMW 435i xDrive Gran Coupe (F36) and compatible with the 2013–2015 BMW 335i (F30), this upgrade is ideal for enthusiasts seeking improved suspension precision and reduced bushing deflection under load.

By upgrading to these low-friction, articulating spherical bearings, you'll experience a more direct and responsive steering feel, especially during spirited driving or track days. The elimination of bushing flex helps maintain optimal suspension geometry, resulting in better braking feedback, sharper turn-in, and enhanced overall handling characteristics. Whether you're a performance driver or a dedicated tuner, these bushings are a reliable choice to support your vehicle's dynamic capabilities.

Key Features

The SPL Parts FKS Series Bushings incorporate advanced materials and design features to deliver maximum performance and durability:

• High-Quality Materials: Crafted from 6061-T6 aluminum, the bearing housings are lightweight yet robust, ensuring long-lasting performance under demanding conditions.
• Massive FK Racing Bearings: Equipped with 1" FK Racing spherical bearings, these bushings provide superior articulation and minimal friction, translating to more precise suspension movement.
• Self-Lubricating Teflon Liners: The bearings feature Teflon liners that reduce maintenance needs and ensure smooth operation over time, even under high loads.
• Enhanced Suspension Geometry: By replacing flexible rubber bushings, these spherical bearings maintain consistent alignment, improving handling feedback and stability.
• Precision Engineering: Designed with exacting tolerances, these bushings fit perfectly into your vehicle's suspension components, ensuring a secure and reliable upgrade.
• Corrosion Resistance: The aluminum housings and high-quality bearings are resistant to corrosion, making them suitable for various driving environments.

Construction & Design

The SPL Parts FKS Series Bushings are meticulously engineered to deliver a seamless upgrade over stock components. The use of lightweight 6061-T6 aluminum ensures durability without adding unnecessary weight, which is crucial for maintaining vehicle balance and performance. The massive 1" FK Racing spherical bearings are designed to articulate freely, reducing bushing deflection and providing a more direct connection between suspension components.

The self-lubricating Teflon liners inside the bearings eliminate the need for regular maintenance, while the precision CNC-machined housings guarantee a perfect fit. This combination of materials and craftsmanship results in a product that not only improves handling but also withstands the rigors of aggressive driving and track use. The spherical design eliminates the compliance found in rubber bushings, offering a more predictable and responsive steering experience.

Installation & Fitment

The SPL Parts FKS Series Bushings are designed as direct bolt-on replacements for the factory caster rod bushings. Installation typically involves removing the existing rubber bushings and pressing in the spherical bearing assemblies. No cutting, drilling, or extensive modifications are required, making this a straightforward upgrade for experienced DIY enthusiasts or professional technicians. Proper alignment after installation is recommended to maximize performance benefits.

• Direct bolt-on installation
• No cutting or drilling required
• Requires basic hand tools and suspension knowledge

Ensure your vehicle is safely supported and follow all manufacturer instructions during installation for optimal results.

What's Included

• Set of SPL Parts FKS Series Front Caster Rod Bushings
• High-performance FK Racing spherical bearings
• All necessary mounting hardware and spacers
• Installation instructions

Ideal For

• Performance enthusiasts seeking sharper handling
• Track day drivers aiming for precise suspension control
• BMW owners looking to eliminate bushing flex and improve steering feedback
• Anyone upgrading suspension components for better responsiveness