Bilstein B12 Pro-Kit Suspension Kit

2011–2025 BMW 3 Series (E90/E91/E92/E93) 325i Convertible Front and Rear

Part #: 46-000132

Overview

The Bilstein B12 Pro-Kit suspension kit is a premium upgrade designed specifically for your BMW 325i Convertible, offering a perfect blend of performance, comfort, and aesthetics. This complete set includes Bilstein Performance dampers paired with Eibach Pro-Kit springs, engineered to deliver a moderate lowering of approximately 24-40mm depending on your vehicle's specific model and setup. Whether you're looking to enhance your daily driving experience, improve handling dynamics, or give your BMW a sleek, lowered stance, the B12 Pro-Kit provides a reliable and high-quality solution.

Designed for enthusiasts who demand precise suspension tuning, the B12 Pro-Kit helps support improved cornering stability, reduced body roll, and a more aggressive yet refined appearance. Its balanced setup ensures that your vehicle maintains excellent ride comfort while delivering enhanced driving response. This kit is ideal for drivers seeking a sporty upgrade without sacrificing everyday drivability or comfort.

Key Features

The Bilstein B12 Pro-Kit combines advanced damping technology with proven spring design to optimize your BMW’s suspension performance. Key features include:

• High-quality Bilstein Performance dampers featuring monotube gas-pressure technology for consistent damping and improved handling response.
• Eibach Pro-Kit springs crafted from high-tensile steel, providing a moderate lowering that enhances vehicle stance and reduces wheel gap for a more aggressive look.
• Custom-tuned damping curves for each application, ensuring optimal ride quality and handling characteristics tailored to your BMW 3 Series.
• Complete kit designed for bolt-on installation, requiring no modifications to your vehicle’s chassis or suspension components.
• Durable construction with corrosion-resistant coatings, ensuring long-lasting performance and reliability under various driving conditions.
• Enhanced aesthetics with a lowered stance that complements the vehicle’s design while maintaining factory ride comfort.
• Improved handling dynamics, including reduced body roll and sharper turn-in response, making your driving experience more engaging.
• Optimized for street use, providing a balance between sporty handling and everyday comfort.

Construction & Design

The Bilstein B12 Pro-Kit features monotube gas-pressure dampers that are engineered for superior heat dissipation and consistent damping performance. The dampers are TIG-welded and finished with corrosion-resistant coatings to withstand harsh conditions. Paired with Eibach’s high-tensile steel springs, the kit ensures a precise fit and reliable operation. The springs are designed with a progressive rate to provide a smooth ride over bumps while offering enhanced stability during spirited driving. The entire assembly is developed using CAD technology and extensive testing to ensure perfect compatibility and performance for your BMW 3 Series Convertible.

Installation & Fitment

The Bilstein B12 Pro-Kit is a bolt-on upgrade that requires no cutting, drilling, or complex modifications. Installation typically involves replacing the factory dampers and springs with the supplied components, making it suitable for DIY enthusiasts with basic suspension tools or professional installation. The kit is designed to fit directly onto your BMW 3 Series (E90/E91/E92/E93) from model years 2011 through 2025, ensuring a precise and secure fitment. For optimal results, a professional wheel alignment is recommended after installation to restore proper suspension geometry and tire wear.

• Complete bolt-on suspension upgrade with no need for additional modifications
• Suitable for BMW 3 Series Convertible models from 2011 to 2025
• Requires basic tools and mechanical knowledge for installation
• Professional alignment recommended for best handling and tire longevity

What's Included

• Bilstein Performance dampers (front and rear)
• Eibach Pro-Kit springs (front and rear)
• All necessary mounting hardware and hardware
• Installation instructions

Ideal For

• BMW 3 Series (E90/E91/E92/E93) owners seeking a moderate lowering for improved aesthetics and handling
• Enthusiasts looking for a balanced suspension upgrade that enhances driving dynamics without sacrificing comfort
• Daily drivers and spirited enthusiasts alike who want a reliable, proven suspension solution