Description
BMW 3 SERIES (45mm) SEDAN E30 (82-91) BC Racing DS Series Coilovers | 5.5/8kg.mm
BC Racing DS Series Coilovers for BMW 3 SERIES (45mm) SEDAN E30 (82-91) deliver premium suspension performance with a 5.5/8kg.mm spring rate engineered for responsive handling and precise vehicle control. These street-focused coilovers combine adjustable damping and ride height with track-proven reliability, making them an ideal choice for enthusiasts seeking improved cornering capability and reduced body roll. Perfect for both road driving and circuit use, the BC Racing DS Series represents a significant upgrade to your classic BMW's suspension geometry.
BC Racing DS Series Coilovers
The BC Racing DS Coilover system is built with digressive valving, offering the same great benefits of the BR Series and is considered a perfect choice for those looking for track-biased coilovers. The digressive piston design produces a non-linear damping curve — allowing higher low-speed damping to control body roll through cornering, acceleration and braking, while providing reduced high-speed damping to allow the wheel to travel when running kerbs, preventing the impact from transmitting fully into the shell and retaining car balance.
Key Features
- Digressive piston and damping curve
- Satin chrome finished shock body
- 30 clicks of simultaneous rebound and compression adjustment
- Ride height adjustment separate to spring preload
- Monotube damper design
- Pillowball top mounts (depending on model)
- Bearing mounted upper spring platform
- Camber adjustable top mounts (depending on model)
- Tapered bottom mount locking collar to prevent collar working loose
- Custom spring rates available
- All spare parts available with low lead times
- Dust boot to protect damper seals
- 1 year manufacturer warranty
Digressive Piston Valving
Unlike a conventional linear piston, the DS digressive design increases damping force at low piston velocities — the range associated with body roll, pitch and dive during driven inputs — while reducing damping force at high piston velocities, such as when a wheel travels over a kerb. This keeps the car stable during cornering loads while allowing impacts to be absorbed without upsetting the chassis balance.
Kit Specifications
- Fitment: BMW 3 SERIES (45mm) SEDAN E30 (82-91)
- Spring Rate: 5.5/8kg.mm
- 30-Way Combined Damping Adjustment
- 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 | Bmw |
| Model | 3 Series |
| Chassis | (45mm) SEDAN E30 (82-91) |
| Series | DS |
| Spring Rate | 5.5/8kg.mm |
| Part Number | I-04-DS-DA |