RM Series Coilover Suspension Kit - E46 Convertible
- Mfg Part #
- I-90-RM
- ECS Part #
- ES#5443476
- Brand
-
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Product Details
The BC Racing RM Series is the "Inverted" evolution of the coilover system, specifically engineered for the MacPherson strut-equipped front end of the BMW E46. By inverting the front dampers, the heaviest mass of the strut—the oil and gas reservoir—is moved from the hub to the top of the assembly. This significantly reduces unsprung weight, allowing the front tires to react more quickly to road imperfections and maintain a more consistent contact patch. Additionally, the RM Series uses a much larger inverted piston shaft to handle higher lateral loads, which is critical for maintaining alignment geometry under heavy cornering. This is the ideal setup for E46 owners who participate in autocross, track days, or high-performance spirited driving.
Key Features:
Inverted Front Damper Design: Reduces unsprung weight to improve wheel tracking and steering response.
Large Diameter Inverted Piston: Engineered to resist the intense side-loading forces common in MacPherson strut configurations.
30-Way Adjustment: Single-knob simultaneous compression and rebound adjustment for precise chassis tuning.
Independent Ride Height: Lower mounts are threaded to allow for ride height changes without sacrificing suspension travel.
Bearing-Mounted Spring Platforms: Eliminates "spring binding" or popping noises during low-speed steering maneuvers.
Specifications:
Vehicle Fitment: 2000–2006 BMW 3-Series (E46) Convertible.
Spring Rates (Default): Front: 6 kg/mm | Rear: 12 kg/mm.
Damper Type: Inverted Front Mono-tube / Upright BR-Series Rear.
Top Mounts: Includes Front Pillowball Camber Plates as standard.
Customization: Fully compatible with custom spring rates and Swift Spring upgrades.
This Part Fits the Following Vehicles
| 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 |
This product is not eligible for Lifetime Replacement
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Free Shipping
Items marked as 'Free Shipping' may qualify for free standard economy ground shipping to the contiguous United States (48 states). Oversized products and direct ship products are excluded from this offer unless otherwise noted.
The policies listed above are subject to change at any time without notice.
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Cancellation Policy
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