BMW 3 SERIES Touring/Convertible E91/E93 (07-10) BC Racing DS Series Coilovers | 5.5/10kg.mm

BMW 3 SERIES Touring/Convertible E91/E93 (07-10) BC Racing DS Series Coilovers | 5.5/10kg.mm

BC Racing DS Series Coilovers for the BMW 3 SERIES Touring/Convertible E91/E93 (07-10) deliver precision handling and adjustable suspension geometry to suit both road and track driving. These coilovers feature a 5.5/10kg.mm spring rate configuration, engineered to provide responsive performance across varied driving conditions. Perfect for drivers seeking a quality suspension upgrade, the BC Racing DS Series combines advanced damping technology with full height and stiffness adjustment capabilities.

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 Touring/Convertible E91/E93 (07-10)
• Spring Rate: 5.5/10kg.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