Bilstein 46-180315 B12 Sportline Lowering Kit for 99-05 VW Golf/Jetta Mk4

Vehicle Fitment

• 1999-2005 Volkswagen Golf IV (Mk4 / 1J platform, all trims including GTI where applicable)
• 1999-2005 Volkswagen Jetta IV (Mk4 / 1J platform)
• 1998-2005 Volkswagen Bora (1J2 platform, market dependent)

Fitment Notes

• Designed for Mk4 Volkswagen FWD platforms only
• Not compatible with AWD/R32 specific suspension configurations
• Lowering amount may vary depending on engine weight and trim level
• Professional alignment recommended after installation due to ride height change

Features

• Complete Bilstein B12 Sportline matched suspension system
• Bilstein B8 monotube gas-pressure performance dampers
• Eibach Sportline progressive-rate lowering springs
• Engineered balance of sport handling and road comfort
• Reduced body roll and improved cornering stability
• Direct bolt-on replacement using OEM mounting points
• TUV-tested German engineering quality standards
• Optimized spring/damper pairing for controlled lowering geometry

Specifications

• Part Number: 46-180315
• Front Lowering: approx. 45-50 mm (varies by trim/axle load)
• Rear Lowering: approx. 30-35 mm (varies by trim)
• Shock Type: Monotube gas pressure (Bilstein B8)
• Spring Type: Progressive lowering springs (Eibach Sportline)
• Platform: Volkswagen 1J (Golf IV / Jetta IV / Bora)
• Drivetrain: FWD
• Construction: Complete 4-corner suspension kit

Included Components

• 2x Front Bilstein B8 Performance Dampers
• 2x Rear Bilstein B8 Performance Dampers
• 2x Front Eibach Sportline Lowering Springs
• 2x Rear Eibach Sportline Lowering Springs

Product Description

The Bilstein 46-180315 B12 Sportline kit is a complete performance suspension upgrade designed for Volkswagen Mk4 platform vehicles including the Golf IV, Jetta IV, and Bora. It combines Bilstein's B8 monotube dampers with Eibach Sportline lowering springs to deliver a significantly more responsive and sporty driving experience.

This system lowers the vehicle's center of gravity, improving cornering stability, steering response, and overall handling precision. The matched damper and spring tuning ensures controlled compression and rebound behavior, reducing body roll while maintaining usable everyday ride quality.

Ideal for drivers seeking a performance-focused stance and improved road dynamics, the B12 Sportline kit is engineered as a complete solution rather than a mix-and-match setup. It is designed for direct installation on OEM suspension mounting points with no major modifications required.