SPL Parts FKS Series Front Spherical Caster Rod Bushing Set

2013–2015 BMW 335i xDrive (F30) 3.0L Turbocharged Inline-Six

Part #: SPL CRBN F3IX

Overview

The SPL Parts FKS Series Front Spherical Caster Rod Bushing Set is a high-performance upgrade designed specifically for the 2013-2015 BMW 335i xDrive F30 models. This set replaces the factory rubber bushings with precision-engineered spherical bearings, delivering improved suspension response and handling characteristics. Whether you're a spirited street driver, a track enthusiast, or someone seeking enhanced steering feedback, these bushings are crafted to elevate your vehicle's performance.

By replacing the stock bushings with low-friction, articulating spherical bearings, you'll experience more direct and consistent suspension geometry under load. This results in sharper turn-in, reduced deflection during aggressive driving, and improved overall handling feedback. The upgrade is ideal for drivers looking to maximize their BMW's dynamic capabilities without compromising daily drivability.

Key Features

The SPL Parts FKS Series Bushings incorporate several advanced features to ensure durability, performance, and longevity:

• Constructed with massive 1" FK Racing Bearings featuring self-lubricating Teflon liners, these bushings minimize friction and provide smooth articulation under load.
• Made from high-quality 6061-T6 aluminum, the bearing housings are lightweight yet robust, offering excellent resistance to corrosion and fatigue.
• Designed to replace the factory rubber bushings, these spherical bearings eliminate bushing deflection, maintaining optimal suspension geometry during aggressive driving or cornering.
• The low-friction design helps reduce unwanted suspension movement, translating to more precise steering and improved handling feedback.
• Engineered with a focus on durability, these bushings are built to withstand the rigors of high-performance driving, including track use and spirited street driving.
• Manufactured with precision CNC machining, ensuring a perfect fit and consistent performance across all units.
• Compatible with the original mounting points, making installation straightforward without the need for modifications.
• Designed to maintain factory-like ride quality while providing significant handling improvements.

Construction & Design

The SPL Parts FKS Series Bushings are meticulously crafted using high-grade materials to ensure maximum durability and performance. The core of each bushing features a 1" FK Racing Bearing with a self-lubricating Teflon liner, which reduces friction and wear over time. The bearing is housed within a precision-machined 6061-T6 aluminum casing, offering a lightweight yet sturdy structure that resists corrosion and deformation.

The spherical design allows for free articulation, eliminating the deflection common with rubber bushings. This design maintains consistent suspension geometry under load, which is crucial for precise handling and feedback. The use of CNC machining ensures a perfect fit and smooth surface finish, contributing to ease of installation and long-term reliability.

Performance & Handling

Replacing the factory bushings with these spherical bearings significantly enhances your vehicle's handling capabilities. Expect more immediate steering response, improved turn-in, and better feedback from the front suspension. The reduction in bushing deflection helps maintain optimal caster and camber angles during aggressive maneuvers, translating to improved grip and stability.

While these bushings are designed for high-performance use, they also provide a noticeable improvement in everyday driving by offering more direct and predictable steering feel. The high-quality construction ensures consistent performance over time, even under demanding conditions.

Installation & Fitment

The SPL Parts FKS Series Bushings are designed as direct replacements for the stock bushings, making installation straightforward for those with basic mechanical skills. No cutting or extensive modifications are required, and all necessary hardware is included. It is recommended to follow proper suspension alignment procedures after installation to ensure optimal handling characteristics. As these bushings are built for performance, some initial tightening may require a torque wrench to specifications for proper function.

• Direct bolt-on replacement for factory bushings
• No cutting, drilling, or major modifications needed
• Installation typically requires basic hand tools and suspension knowledge

What's Included

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

Ideal For

• BMW 335i xDrive (F30) owners seeking improved handling and steering response
• Performance enthusiasts looking to reduce suspension deflection and maintain optimal geometry
• Track day drivers and spirited street drivers aiming for precise suspension control
• Anyone wanting a durable, high-performance upgrade for their front suspension