Description
Mercedes SLK R171 (04-10) BC Racing BR Series RA Coilovers | 6/11kg.mm
BC Racing BR Series RA Coilovers for the Mercedes SLK R171 (04-10) deliver track-focused performance and precision handling through a carefully engineered 6/11kg.mm spring rate, complemented by pillowball top mounts with camber adjustment on the front axle and flexible rear mounting options. These lightweight, adjustable coilovers are engineered to optimise suspension geometry and control for drivers seeking responsive cornering and enhanced road feedback on both road and circuit environments. Built with BC Racing's proven engineering expertise, the BR Series RA suspension package provides the platform for serious chassis tuning on your Mercedes SLK R171 (04-10).
BC Racing BR Series Coilovers
The BC Racing BR Series offers entry into coilover suspension without sacrificing performance, comfort, build quality or handling. Each kit is developed through extensive vehicle-specific testing and refinement, ensuring the most well-balanced and affordable aftermarket suspension possible for each application. The BR series coilovers use a large 46mm diameter piston in a 53mm diameter damper body — as the damper operates, oil temperature rises and viscosity changes, which can alter damping characteristics. The enlarged 53mm body increases oil capacity, reducing the peak temperature and maintaining more consistent damping performance as a result.
Key Features
- 30-way adjustable damping
- Monotube damper design
- Ride height adjustment separate to spring preload
- Tapered bottom mount locking collar to prevent collar working loose
- Pillowball top mounts (depending on model)
- Bearing mounted upper spring platform
- Camber adjustable top mounts (depending on model)
- Custom spring rates available
- All spare parts available with low lead times
- Dust boot to protect damper seals
- 1 year manufacturer warranty
30-Way Damping Adjustment
A single adjuster controls both compression and rebound simultaneously, giving a wide tuning range without the complexity of separate circuits. The balance between front and rear axles can be shifted to influence handling — the effect is repeatable and noticeable across the 30 positions of adjustment.
Ride Height Independent of Spring Preload
Ride height is set via the bottom mount rather than the spring platform, meaning full damper travel is retained at any ride height chosen. The tapered bottom mount locking collar locks the setting securely without requiring tools to recheck after every session.
The RA configuration is supplied with aluminium camber adjustable pillowball top mounts on the front (where available) and aluminium rear top mounts with rubber centres, or no rear top mounts depending on the application.
Kit Specifications
- Fitment: Mercedes SLK R171 (04-10)
- Spring Rate: 6/11kg.mm
- 30-Way Combined Damping Adjustment
- Front Top Mount: Inc. Pillowball Top Mount / Camber where available
- Rear Top Mount: Rubber Top Mount or No Top Mount
- Monotube Damper Design
- Full Ride Height Adjustment (via Bottom Mount)
- Adjustable Spring Platforms for Corner Weighting
- Tapered Bottom Mount Locking Collar
- Custom Spring Rates Available
- All Spare Parts Available
- 1 Year Manufacturer Warranty
Fitment Data
| Make | Mercedes Benz |
| Model | Slk |
| Chassis | Mercedes SLK R171 (04-10) |
| Series | BR |
| Type | RA |
| Spring Rate | 6/11kg.mm |
| Front Top Mount | Inc. Pillowball Top Mount / Camber where available |
| Rear Top Mount | Rubber Top Mount or No Top Mount |
| Part Number | J-03-BR-RA |