Bilstein 46-180537 B12 Pro-Kit Lowering Suspension for 08-12 BMW 1-Series E82/E8

Vehicle Fitment

• 2008-2012 BMW 1-Series E82 Coupe (118i, 120d, 123d, 125i, 128i, 135i)
• 2008-2012 BMW 1-Series E88 Convertible (128i, 135i)

Features

• B12 Pro-Kit complete lowering suspension kit engineered for fixed-height performance
• Includes performance tuned monotube dampers front and rear
• Matched Eibach Pro-Kit progressive lowering springs
• Moderate lowering for improved stance and handling dynamics
• Balanced sport-oriented ride without compromising daily use comfort
• Yellow high-pressure gas dampers with dark-grey springs for durability
• Factory replacement fitment for smooth installation
• Limited lifetime manufacturer warranty for quality assurance

Specifications

• Brand: Bilstein
• Part Number: 46-180537
• Series: B12 (Pro-Kit)
• Kit Type: Lowering suspension (front + rear)
• Front Drop Height: ~1.2-1.6 in
• Rear Drop Height: ~1.2-1.6 in
• Shock Design: Monotube gas pressure dampers
• Spring Type: Progressive lowering springs
• Quantity: Full set (4 dampers + 4 springs)
• Warranty: Limited lifetime warranty

Included Components

• 2x Front B8 performance monotube dampers
• 2x Rear B8 performance monotube dampers
• 2x Front lowering springs
• 2x Rear lowering springs

Product Description

The Bilstein 46-180537 B12 Pro-Kit suspension kit is a vehicle-specific loweringsystem designed for BMW 1-Series E82 and E88 models. This complete front andrear suspension upgrade combines Bilstein's high-pressure monotube dampers withEibach Pro-Kit progressive lowering springs to deliver a fixed ride heightlowered stance, enhanced handling dynamics, and improved driver confidence.This sport-oriented kit is ideal for enthusiasts seeking sharper corneringresponse without sacrificing everyday comfort.

Engineered for direct fitment on compatible BMW vehicles, the B12 Pro-Kitfeatures tuned damping and spring rates that work together for balanced ridequality and control. The moderate lowering height improves appearance andreduces body roll while maintaining predictable behavior over uneven roads.Installation replaces the stock shocks and springs with this performance-tunedsystem designed to maintain compliance with chassis geometry. The Bilsteinlimited lifetime warranty provides peace of mind for long-term reliability.