BC Racing BR Series Coilover Kit - BMW 3-Series G20 2019+ (50mm Strut)

QT Parts is a Finnish online store.

Our warehouse is located in Nokia, Finland.

You can collect your order directly from us if needed. Simply select “Pickup” at checkout.

Pay securely with multiple payment methods, including invoice and installment plans through Klarna.

The delivery time for products in stock is 1-5 business days. We ship worldwide.

If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch. International orders may be subject to VAT, import duties, and customs fees upon arrival in the destination country.

Terms for product returns:

• You must return the ordered products within 14 days of receiving
• The products must be unused and without damages
• Commission fee for handling returns is 21,90€
• For product returns, the customer is in charge of the return costs. Only door to door service (Express)
• Shipping costs are not refunded

For international orders sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.

Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.

Pre order / made-to-order products

If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.

If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.

This condition applies to the following product categories:

• Suspension
• Engine Tuning
• Engine Parts
• Exhaust Systems
• Fueling
• Turbochargers/superchargers
• Drivetrain
• ECE-approved Downpipes

All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.

In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.

The BC Racing BR-Series coilover suspension kit offers a wide range of adjustment, high performance, and consistent damping for both street and track use. The monotube design combined with a high-capacity shock absorber ensures reliable operation even under heavy loads.

The shock absorber uses a 46 mm piston in a 53 mm body, which increases oil volume and reduces the effect of temperature fluctuations on damping. The larger oil volume helps maintain consistent and high-performance damping even during prolonged stress.

Technical Specifications:

• Front spring rate: 6 kg/mm
• Rear spring rate: 11 kg/mm
• Front top mount: Pillowball (uniball)
• Rear top mount: Rubber
• Vehicle: BMW 3 Series G20

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 design for efficient heat management
• Nitrogen-pressurized shock absorbers to ensure consistent 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 ring prevents height adjustment from loosening

Performance and Adjustability

Height Adjustment:
Ride height is adjusted from the lower mount of the shock absorber, allowing for a wide range of adjustment without affecting spring preload or shock absorber operating range.

Damping Adjustment:
The 30-level adjustment allows for fine-tuning of the suspension for different applications. By adjusting the damping of the front and rear axles, it is possible to influence driving behavior, such as understeer and oversteer, grip, and weight transfer.

Corner Weighting:
The adjustable spring perch allows the car to be balanced so that the load is optimally distributed to all wheels, which improves grip, driving stability, and cornering speed.

Construction and Durability

• Black chromate-plated steel shock absorbers with excellent corrosion resistance
• Anodized aluminum components (top mounts, locking rings)
• Powder-coated and electrophoretically treated steel parts
• Springs made of high-strength steel (SAE9254)
• Tested for 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