Product Details
BC Racing DS Series Coilovers for the 1987-1991 BMW M3 Weld-In (E30) blend street-tuned ride quality with track-ready adjustability, giving you more body control than any OEM damper without the harshness of a pure race kit. Every kit is extensively tested on the M3 Weld-In E30 chassis and refined until it balances ride quality with performance — the reason M3 Weld-In coilovers from BC Racing are the best-selling adjustable kits in their segment worldwide.
DS Series kits pair a mono-tube damper with BC's proprietary digressive piston design — increased low-speed damping for flat corner entry, compliant high-speed response over expansion joints and potholes. The finished shock body is silver, visually distinct from the BR Series, and ride height is adjustable independent of spring preload. 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, custom rates, and custom 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 has been manufacturing adjustable coilovers since 2004 and is one of the most popular coilover brands in the automotive tuning industry for a reason: competitive pricing, deep customization, proven reliability, and a fully rebuildable damper design that lasts years instead of seasons. These M3 Weld-In coilovers arrive tuned for the E30 chassis and ready to install — note that this is a weld-in kit and requires professional fabrication. 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
- 30-level simultaneous compression/rebound damping adjuster
- Mono-tube damper with BC's proprietary digressive piston
- Silver satin-chrome finished shock body (visually distinct from the BR Series)
- Ride height adjustable independent of spring preload
- Upper mount hardware varies by chassis — camber plates, pillowball, or reused OEM mounts. See the Specifications table for what's included on your kit.
- Swift Spring and custom spring rate upgrades available at checkout
- Custom damper valving paired with custom spring rates on request
- Fully rebuildable — replacement parts available from BC for the life of the shock
- 2-year manufacturer warranty against defects
Specifications
| Part Number | I-24-DS |
| Part Name | DS Series Coilovers |
| Vehicle | 1987-1991 BMW M3 Weld-In RWD (E30) 51mm Front Strut |
| Drivetrain | RWD |
| Chassis Code | E30 |
| Damping Adjustment | 1-Way (30 levels) |
| Ride-Height Adjustable | Yes |
| Spring Rate - Front | 8 kg/mm |
| Spring Rate - Rear | 8 kg/mm |
| Spring Size - Front | 62-160-8K |
| Spring Size - Rear | 62-120-8K |
| Swift Springs - Front | 62-152-X |
| Swift Springs - Rear | 62-127-X |
| Camber Plates - Front | Included |
| Camber Plates - Rear | Not Applicable |
| Suspension Design - Front | True Coilover |
| Suspension Design - Rear | Divorced |
| Notes |
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Vehicle Fitment
- 1987 BMW M3 Weld-In RWD (E30) 51mm Front Strut
- 1988 BMW M3 Weld-In RWD (E30) 51mm Front Strut
- 1989 BMW M3 Weld-In RWD (E30) 51mm Front Strut
- 1990 BMW M3 Weld-In RWD (E30) 51mm Front Strut
- 1991 BMW M3 Weld-In RWD (E30) 51mm Front Strut