The BC Racing BR-Series coilover suspension kit is designed to provide precise adjustability, reliable performance, and excellent handling for both street and track use. The kit utilizes a monotube design and a high-capacity shock absorber, ensuring consistent damping even in demanding conditions.
The shock absorber uses a 46 mm piston in a 53 mm body, which increases oil volume and reduces temperature rise. This improves damping consistency and performance, especially during aggressive driving.
Technical specifications:
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Front spring rate: 8 kg/mm
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Rear spring rate: 12 kg/mm
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Front top mount: Pillowball (uniball)
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Rear top mount: Rubber
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Vehicle: BMW 3-series E92 Coupé
Features:
- 30-level damping adjustment (combined compression and rebound)
- Height adjustment via the lower mount – maintains full shock absorber travel
- Camber-adjustable aluminum pillowball top mounts (front axle)
- Monotube construction for efficient heat management
- Nitrogen-pressurized shock absorbers – consistent and stable damping
- Adjustable spring perch and corner weighting possible
- Bearing-equipped upper spring perch reduces friction and improves steering feel
- Dust boots to protect shock absorber seals
- Patented locking collar prevents height adjustment from loosening
Performance and Adjustability
Height adjustment:
Height is adjusted from the lower mount, ensuring optimal spring preload and shock absorber function at all heights.
Damping adjustment:
The 30-level adjustment allows for fine-tuning the suspension for different uses – street driving, track, drifting, or drag racing. By adjusting the front and rear axle damping, the car's behavior (understeer/oversteer, grip, weight transfer) can be influenced.
Corner weight:
The adjustable spring perch allows for balancing the car so that each wheel receives optimal load, which improves grip and driving stability.
Construction and Durability
- Shock absorbers made of black chrome-plated steel with excellent corrosion protection
- Anodized aluminum components for improved durability
- Steel components electroplated and powder-coated
- Springs made of high-strength steel (SAE9254)
- Tested to withstand over 500,000 compression cycles
Package includes:
- Complete coilover suspension kit (front and rear axle)
- Camber-adjustable pillowball top mounts (front)
- Rubber top mounts (rear)
- Ready-to-install shock absorbers and springs