I-121-ER - BC Racing ER Series Coilover Suspension Kit - E46 M3 Convertible
BC Racing ER Series Coilover Suspension Kit - E46 M3 Convertible
For the E46 M3 enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ER Series offers a "motorsport-first" engineering approach. By moving the secondary damping piston to the external canister, the system maintains its integrity under high-stress conditions. This is especially beneficial for the M3 Convertible, where the high 12kg rear spring rate helps counteract the platform's inherent weight and chassis flex, providing a flat and predictable cornering attitude. The system includes front pillowball camber plates as standard, eliminating the compliant factory rubber bushings to provide direct, unmediated steering feedback and allowing for aggressive track-ready alignment settings.
Key Features:
Reduced Damping Fade: External canisters keep fluid cooler by increasing the distance from hot brake components.
Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for surgical alignment and increased turn-in bite.
Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme vibration.
Linear Piston Architecture: Provides a predictable and consistent damping feel for better driver confidence at the limit.
Serviceable Construction: All components are individual and fully replaceable, ensuring the long-term serviceability of the system.
Specifications:
Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe.
Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm.
Spring Type: High-strength SAE9254 cold-wound steel.
Construction: Black chrome-plated steel bodies for maximum corrosion resistance and anodized 6061-T6 aluminum.
Warranty: 1-Year limited manufacturer's warranty.
BC Racing ER Series Coilover Suspension Kit - E46 M3 Convertible
$1955.00
Product Details
For the E46 M3 enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ER Series offers a "motorsport-first" engineering approach. By moving the secondary damping piston to the external canister, the system maintains its integrity under high-stress conditions. This is especially beneficial for the M3 Convertible, where the high 12kg rear spring rate helps counteract the platform's inherent weight and chassis flex, providing a flat and predictable cornering attitude. The system includes front pillowball camber plates as standard, eliminating the compliant factory rubber bushings to provide direct, unmediated steering feedback and allowing for aggressive track-ready alignment settings.
Key Features:
Reduced Damping Fade: External canisters keep fluid cooler by increasing the distance from hot brake components.
Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for surgical alignment and increased turn-in bite.
Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme vibration.
Linear Piston Architecture: Provides a predictable and consistent damping feel for better driver confidence at the limit.
Serviceable Construction: All components are individual and fully replaceable, ensuring the long-term serviceability of the system.
Specifications:
Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe.
Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm.
Spring Type: High-strength SAE9254 cold-wound steel.
Construction: Black chrome-plated steel bodies for maximum corrosion resistance and anodized 6061-T6 aluminum.
Warranty: 1-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
M3
S54 3.2L
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
