I-90-ZR - BC Racing ZR Series Coilover Suspension Kit - E46 Convertible
BC Racing ZR Series Coilover Suspension Kit - E46 Convertible
Designed for racers ranging from novice to pro, the BC Racing ZR Series addresses the unique weight distribution and chassis requirements of the E46 Convertible. The inverted front struts utilize a massive 42mm piston shaft, providing a rigid backbone that prevents geometry deflection under heavy braking and high-G cornering. By separating low-speed and high-speed compression, drivers can stiffen low-speed damping to eliminate body roll and pitch during turn-in while keeping high-speed damping compliant enough to absorb track curbing without upsetting the chassis. Every ZR kit is hand-assembled with TIG-welded steel and anodized 6061-T6 aluminum, providing a professional-grade motorsport component that is fully rebuildable and customizable.
Key Features:
Enhanced Low-Speed Damping: Specifically tuned to stabilize the E46’s heavier convertible chassis during quick weight transitions.
Thermal Management: Remote-mounted external reservoirs move fluid away from hot brake components to ensure consistent lap times.
Camber Adjustable Top Mounts: High-quality aluminum plates eliminate factory rubber "mush," providing direct, unmediated steering feedback.
Bearing-Mounted Spring Platforms: Minimizes friction between the spring and perch to eliminate "spring binding" during tight steering.
Industrial Corrosion Protection: Black chrome-plated steel shock bodies and electrophoretic disposition on steel mounts ensure a long service life.
Specifications:
Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible (All models except M3).
Spring Rates (Standard): Front: 6 kg/mm | Rear: 10 kg/mm (Swift Springs).
Piston Design: Linear Twin-Piston (Standard on 3-way kits).
Weight: Approx. 23 kg (Full Kit).
Warranty: 2-Year limited manufacturer's warranty.
BC Racing ZR Series Coilover Suspension Kit - E46 Convertible
$2865.00
Product Details
Designed for racers ranging from novice to pro, the BC Racing ZR Series addresses the unique weight distribution and chassis requirements of the E46 Convertible. The inverted front struts utilize a massive 42mm piston shaft, providing a rigid backbone that prevents geometry deflection under heavy braking and high-G cornering. By separating low-speed and high-speed compression, drivers can stiffen low-speed damping to eliminate body roll and pitch during turn-in while keeping high-speed damping compliant enough to absorb track curbing without upsetting the chassis. Every ZR kit is hand-assembled with TIG-welded steel and anodized 6061-T6 aluminum, providing a professional-grade motorsport component that is fully rebuildable and customizable.
Key Features:
Enhanced Low-Speed Damping: Specifically tuned to stabilize the E46’s heavier convertible chassis during quick weight transitions.
Thermal Management: Remote-mounted external reservoirs move fluid away from hot brake components to ensure consistent lap times.
Piston Design: Linear Twin-Piston (Standard on 3-way kits).
Weight: Approx. 23 kg (Full Kit).
Warranty: 2-Year limited manufacturer's warranty.
Prop 65 Warning
Product Q&A
Lifetime Replacement
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
E46
323Ci
M52 2.5L
Use vehicle selector to confirm fitment
BMW
E46
325Ci
M54 2.5L
Use vehicle selector to confirm fitment
BMW
E46
330Ci
M54 3.0L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
For additional information see the terms of use.
Prop 65 Warning
