Swift Springs Upgrade for BC Racing Coilovers (Set of 4)

Save $56.00
Swift SpringsSKU: BC-SWIFT-4

Sale price$340.00 Regular price$396.00
Ships direct from BC Racing North America


Do you already own BC Racing Coilovers and want to upgrade them to Swift Springs, or do you want to change your spring rates?

Swift Springs' innovative designs have made us a staple in the performance tuning world. Our products are the result of over 90 years of experience in industrial spring manufacturing. Our engineers have spent countless hours developing and re-developing our springs, in order to create a product that is light, durable, and compliant, while still maintaining linear spring rates.

Many enthusiasts will swap springs from brand to brand with the only noticeable difference being a stiffer or softer ride. But what if a spring could offer a noticeable increase in traction, smoother weight transfer, better ride quality, lower tire temperatures, and a more predictable feel? The engineers at Swift have taken that 'what if' and turned it into reality.

All Swift Springs are manufactured using (H5S.TW.) which is far superior to silicone chrome steel and allows us to wind our springs with less coils, resulting in reduced un-sprung weight and increased stroke

Since the metric system is used widely in the sport compact and road race market, we have introduced the metric line of coilover springs to reduce confusion and to better cater to our customer's needs.

Whether you are looking for a comfortable ride for your commuter or a more aggressive setup for your race car, we have the right spring for your application!


  • This is for one set of four (4) springs.
  • It's highly recommended to ensure your struts are valved for the rates you are choosing. Please contact BC Racing NA to confirm valving. Failure to properly pair your springs and struts can damage your coilovers, hinder performance, and reduce ride quality.

In-Stock Products: 1-3 business days

Products that are in-stock and do not require customization ship the same business day if ordered before 2pm ET. Orders placed after 2pm ET will ship the following business day. To check if a product is in stock, please message us.

Out of Stock: About 4-6 weeks

If an item is out of stock, the average lead time is 4-6 weeks before shipping.

Custom Builds: About 6-8 weeks

Custom builds will have an estimated lead time of 6-8 weeks before shipping. Custom builds include any combination of the following options:

  • Custom spring rates
  • DS/ER/HM/RM/ZR Series
  • Extreme Low kits
  • Swift Springs

Custom spring rates are available at no additional cost. Rates up to 20K are available in both BC Racing springs and Swift Springs. Rates ranging from 20K to 40K will require Swift Springs.

Transit Time: 1-6 days

All BC Racing Coilovers ship UPS Ground from BC Racing North America located in Oviedo, FL. The map below shows the average time it takes for the shipment to arrive at its destination.

BC Racing North America's warranty period is one year against manufacturer’s defects. If BC Racing NA deems a part defective, BC Racing will send a replacement for that specific part. All warranty claims must be sent directly to BC Racing North America. We are not able to handle warranty claims.

Warranty Registration

To register your BC Racing Coilovers, visit BC Racing NA's Warranty Registration Form. You will need your kit's serial number and a copy of your original purchase receipt that we provided you.


Ask a Question
  • I purchased br series bc racing Coilovers for my 2017 Infiniti q50 3.0t awd. What is the recommended spring rate for a comfortable ride for my wife and kids.

    The recommended spring rate is the one marked as "Default (Recommended)" in the dropdown.

  • can i get 30k for front & 50k for rear?

    No. The spring rates go up to 40k as shown in the options.

  • Are the springs made to order to fit my coilover setup? I have a 2013 camaro Ls and I’m looking for smaller springs with more stiffness to lower the car a little more. Is 34k springs good enough with 4 inch springs or what would be recomended for dropping it another say 3-4 inches

    The springs are determined based on inner diameter, spring rate, and length. Just provide us your vehicle details when ordering and the setup you need.

  • Do y’all carry 40k swift springs

    Yes, Swift Springs go up to 40k for BC Racing Coilovers.

  • What size spring will come with these, it only gives me option for the spring rate not the size of the spring?

    When placing the order there's a field to designate your vehicle. In that field, let us know the the vehicle year/make/model and model (ie: 2012 Lexus IS350 RWD). Also, use the dropdown to select the model of coilovers they are for. From that information, we will determine the correct spring size needed.

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