Bilstein B12 Pro-Kit Suspension Kit

2017–2019 BMW 4 Series Gran Coupe 430i Front and Rear

Part #: 46-229793

Overview

The Bilstein B12 Pro-Kit suspension kit is a comprehensive upgrade designed specifically for your BMW 4 Series Gran Coupe 430i from model years 2017 to 2019. This kit combines high-performance Bilstein dampers with Eibach Pro-Kit springs, delivering a balanced blend of improved handling, aesthetics, and ride comfort. Whether you're looking to enhance your vehicle's sporty feel or achieve a more aggressive stance, this suspension kit provides a reliable and effective solution.

Ideal for enthusiasts who enjoy spirited driving, daily commuting, or light track use, the Bilstein B12 Pro-Kit offers a noticeable upgrade over stock suspension components. You’ll experience sharper turn-in, reduced body roll, and a more planted feel on the road, all while maintaining a comfortable ride quality. The moderate lowering of 24-40mm not only enhances the vehicle’s appearance but also improves overall handling dynamics without sacrificing everyday comfort.

Key Features

The Bilstein B12 Pro-Kit is engineered with precision and attention to detail, incorporating advanced materials and design features to maximize performance and durability. Here are some of the key features that make this suspension kit a top choice for BMW owners:

• Complete set of Bilstein Performance dampers paired with Eibach Pro-Kit springs, providing a harmonious balance of ride comfort and sporty handling.
• Moderate lowering between 24-40mm, enhancing vehicle stance and reducing unsprung weight for improved responsiveness.
• Bilstein monotube dampers with digressive piston technology for consistent damping performance under various driving conditions.
• Eibach Pro-Kit springs designed for optimal spring rate and ride height, engineered to work seamlessly with Bilstein shocks.
• Precision-tuned suspension geometry for improved steering response and stability during cornering.
• Durable construction with high-quality materials to withstand the rigors of daily driving and spirited performance.
• Enhanced aesthetics with a lowered stance that complements the vehicle’s design without compromising ride comfort.
• Easy bolt-on installation with no need for major modifications, making it suitable for DIY enthusiasts and professional installers alike.
• Backed by reputable brands known for quality and performance in the automotive aftermarket industry.

Construction & Design

The Bilstein B12 Pro-Kit features monotube dampers constructed with a robust steel body and a digressive piston design that ensures consistent damping force across a wide range of conditions. The Eibach Pro-Kit springs are crafted from high-tensile steel, carefully calibrated to provide the ideal spring rate for sporty handling and ride comfort. The combination of these components results in a suspension system that is both durable and finely tuned for your BMW 4 Series Gran Coupe.

The kit’s design emphasizes precise fitment and seamless integration with your vehicle’s existing suspension geometry. The lowered ride height not only improves the vehicle’s stance but also reduces body roll and squat during acceleration, enhancing overall driving dynamics. The use of high-quality materials and manufacturing processes ensures long-lasting performance and reliability, even under demanding driving conditions.

Installation & Fitment

The Bilstein B12 Pro-Kit is a bolt-on upgrade that requires no cutting or major modifications. Installation typically involves replacing the factory shocks and springs with the included Bilstein dampers and Eibach springs, making it a straightforward process for experienced DIYers or professional technicians. Proper alignment is recommended after installation to ensure optimal handling and tire wear. No additional tuning or adjustments are necessary, and the kit is designed to fit seamlessly with your vehicle’s existing suspension components.

• Complete bolt-on suspension upgrade with no cutting or drilling required.
• Includes all necessary hardware and instructions for a hassle-free installation.

What's Included

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

Ideal For

• BMW 4 Series Gran Coupe owners seeking improved handling and aesthetics
• Enthusiasts wanting a moderate drop for a sportier stance
• Daily drivers who desire enhanced ride quality and stability
• Performance enthusiasts looking for a reliable suspension upgrade