Bilstein B4 OE Replacement Rear Suspension Strut Assembly

2011–2025 Porsche Boxster

Part #: 22-147585

Overview

The Bilstein B4 OE Replacement Rear Suspension Strut Assembly is designed to restore your Porsche Boxster's original ride quality and handling characteristics. Engineered with precision and backed by Bilstein's renowned reputation for quality and durability, these dampers provide a seamless replacement for worn or damaged factory units. Whether you're a daily driver seeking to maintain factory comfort or a performance enthusiast aiming to keep your vehicle's handling at its peak, the B4 OE Replacement struts deliver reliable performance and consistent ride quality.

These struts are ideal for Porsche owners who want to preserve the factory ride feel, ensuring your vehicle maintains its original handling dynamics. With Bilstein's advanced engineering, you'll get a suspension component that not only meets but often exceeds OE standards, providing peace of mind and long-lasting performance.

Key Features

The Bilstein B4 OE Replacement rear strut assemblies incorporate several key features that make them a top choice for Porsche enthusiasts:

• OE-Quality Construction: Built with high-strength steel and precision manufacturing processes to ensure durability and perfect fitment.
• Monotube Design: Features a monotube construction that provides consistent damping performance and improved heat dissipation, resulting in a smoother ride and better handling.
• Gas Pressure Technology: Utilizes Bilstein's proprietary gas pressure technology to deliver responsive damping and enhanced stability during spirited driving or daily commuting.
• Direct OE Replacement: Designed to match the original factory specifications, ensuring straightforward installation without modifications.
• Maintains Original Ride Quality: Engineered to uphold the comfort and handling characteristics that make the Porsche Boxster a joy to drive.
• Corrosion-Resistant Coatings: Equipped with protective coatings to withstand harsh road conditions and extend service life.
• Rigorous Testing: Each strut assembly undergoes strict quality control and testing to meet or exceed OE standards, ensuring reliable performance over time.

Construction & Design

The Bilstein B4 OE Replacement struts are crafted with high-quality materials to ensure longevity and consistent performance. The monotube design features a robust steel body and piston rod, providing superior strength and resistance to wear. The internal components are engineered for precise damping control, helping to absorb road imperfections and maintain optimal tire contact with the road surface.

Designed with exacting tolerances, these struts fit seamlessly into your Porsche Boxster's suspension system, restoring factory handling and ride comfort. The use of advanced coatings and corrosion-resistant materials ensures durability even in challenging driving conditions, making them a reliable choice for both daily driving and spirited performance.

Installation & Fitment

The Bilstein B4 OE Replacement rear suspension strut assemblies are designed as direct bolt-on replacements for the original equipment. Installation is straightforward for experienced technicians or DIY enthusiasts with basic suspension knowledge. No cutting, drilling, or modifications are required, and the factory mounting points are used for a perfect fit.

It is recommended to replace struts in pairs to ensure balanced handling and ride quality. Proper torque specifications and alignment are essential for optimal performance and tire longevity.

What's Included

• Complete rear suspension strut assembly with integrated damper and mounting hardware
• Installation instructions (if applicable)

Ideal For

• Porsche Boxster owners seeking to restore original ride quality and handling
• Drivers experiencing worn or leaking factory dampers
• Enthusiasts who want a reliable, OE-quality replacement for daily driving or spirited performance
• Anyone looking to maintain the factory suspension setup without upgrades or modifications