BC Racing RM Series Coilovers for the 2020+ Mazda CX-30 (DMEP) are purpose-built for McPherson-strut cars that see serious track time, with an inverted mono-tube damper engineered to outlast a hard season of lateral loads. Every kit is extensively tested on the CX-30 DMEP chassis and refined until it balances ride quality with performance, the reason CX-30 coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.
The RM Series inverts the mono-tube damper on strut-equipped chassis, putting the heavy internals where the lateral loads are worst. A wider piston shaft than conventional uprights means more consistent damping on long sessions and more fatigue life before rebuild. Where BC Racing separates itself is tuning philosophy: every off-the-shelf spring rate and damper setup is chosen to stay comfortable on daily roads while still delivering real performance at the track. If you want something different, Swift Springs, rates, and valving are all options at checkout, BC will match the valving of the dampers to whatever springs you pick, something most brands don”t offer outside their flagship race lineup.
BC Racing”s reputation in the aftermarket suspension world is built on four things: competitive pricing that beats the rest of the fully-adjustable market, ization depth that rivals the top-tier race brands, long-term reliability earned over 20 years of production, and a rebuildable design that keeps the same set of dampers serving you through multiple builds. These CX-30 coilovers arrive tuned for the DMEP chassis and ready to bolt in, no break-in period, no guessing at setup. Every kit ships with a 2-year manufacturer warranty, lifetime access to BC service parts (pistons, seals, shafts, no unit replacement required when it”s time for a rebuild), and in-house tech support from both BC Racing and the Springrates team.
Features
Specifications
| Part Number | N-42-RM |
| Part Name | RM Series Coilovers |
| Vehicle | 2020+ Mazda CX-30 |
| Drivetrain | AWD |
| Chassis Code | DMEP |
| Damping Adjustment | 1-Way (30 levels) |
| Ride-Height Adjustable | Yes |
| Spring Rate – Front | 6 kg/mm |
| Spring Rate – Rear | 4.5 kg/mm |
| Spring Size – Front | 62-200-6K |
| Spring Size – Rear | 62-200-4.5K |
| Swift Springs – Front | 62-203-X |
| Top Mounts – Front | Camber Plates |
| Top Mounts – Rear | Rubber Mounts |
| Rear Damping Extenders | Not Compatible |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | Divorced |
| Notes | – |


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