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BC Racing Coilovers

BC Racing coilovers are fully adjustable coilover suspension systems offering 30-way damping adjustment and adjustable ride height, available in multiple series designed for street performance, daily driving, and track use.

At Redline360 we carry BC Racing's full coilover lineup including the BR Series, DS Series, ER Series, HM Series, and Extreme Low configurations for a wide range of vehicles including the WRX, 350Z, 370Z, Q50, G37, GR86, BMW E46, and Honda Accord. Every BC Racing coilover kit ships fast from our US warehouse, and we can help you choose the right series and spring rate for your build. If you want to compare your options, check out our full coilovers collection or read our coilovers vs lowering springs guide.

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BC Racing Coilover Questions Answered

BC Racing coilovers are consistently well-regarded in the enthusiast community as one of the best value coilover options on the market, offering 30-way damping adjustment, full ride height adjustability, and a wide vehicle fitment range at a price point significantly below premium brands like KW or Ohlins. Their BR Series in particular is one of the most widely installed street coilovers globally.
The BR Series is BC Racing's most popular street coilover, using a mono-tube damper design with 30-way damping adjustment and a wide spring rate range suited for daily driving and spirited street use. The DS Series uses a separate spring and damper configuration on the front that allows the spring and damper to be adjusted independently, making it a better choice for drivers who want more precise ride quality tuning without committing to a full race setup.
BC Racing coilovers are ride-height adjustable, typically offering a drop range of approximately 1 to 3 inches from stock height depending on the vehicle and series. The Extreme Low series provides a greater drop range for builds targeting a more aggressive stance. The exact range varies by vehicle fitment, so check the specific product listing for your year, make, and model.
30-way adjustable damping means the shock absorber has 30 distinct settings that control how stiff or soft the damper responds to suspension movement. Setting 1 is the softest for maximum comfort, setting 30 is the firmest for maximum performance. This lets you tune the ride feel from a comfortable daily driver setup to a stiffer track-oriented feel using a simple adjustment knob on top of each damper.
Yes, BC Racing coilovers are compatible with Swift Springs, which are lightweight titanium-alloy performance springs that reduce unsprung weight and improve suspension response compared to the stock BC Racing springs. Swift Springs are a popular upgrade for drivers who want better handling precision without replacing the entire coilover kit.
Yes, a four-wheel alignment is required after installing coilovers since changing ride height alters camber and toe angles. Driving without an alignment after lowering causes uneven tire wear and can affect handling stability. Many BC Racing kits include optional camber plates or top mounts that allow camber adjustment as part of the alignment process.
The BC Racing Extreme Low series is a specialized coilover kit designed to achieve a significantly lower ride height than the standard BR or DS series, targeting builds where maximum drop and aggressive stance are the priority. It uses shorter damper bodies and higher spring rates than the standard series and is not recommended for vehicles that need to maintain normal ground clearance for daily driving.

Which BC Racing Series Is Right for Your Build?

BR Series: Best All-Around Street Coilover

The BR Series is BC Racing's flagship and most popular coilover kit, covering the widest range of vehicles and offering the best balance of price, performance, and adjustability for street and occasional track use. If you are unsure which series to choose, the BR Series is the right starting point for most builds.

DS Series: Independent Spring and Damper Adjustment

The DS Series uses a digressive valved shock with the spring and damper adjustable separately on the front, giving more precise ride quality control for drivers who prioritize daily comfort alongside performance. It is a step up from the BR Series in tunability without going to a full race setup.

ER Series: Racing-Focused Configuration

The ER Series is built for dedicated track and racing applications with higher spring rates, remote reservoirs on select applications, and stiffer overall tuning than the BR or DS Series. It is not designed for comfortable daily driving and is best suited for cars that spend more time at the track than on the street.

Extreme Low Series: Maximum Drop

The Extreme Low series is for builds where maximum stance and the lowest possible ride height are the priority. It uses shorter damper bodies than the standard series and is best suited for show cars, low-clearance builds, and dedicated stance setups rather than daily drivers or track cars that need ground clearance.

Swift Springs Upgrade Option

Select BC Racing coilover kits are available with a Swift Springs upgrade, replacing the standard BC Racing springs with lightweight titanium-alloy Swift Springs that reduce unsprung weight and improve suspension response and rebound speed. The result is sharper turn-in, more precise mid-corner feel, and better overall handling without changing the damper itself. Swift Springs are a popular choice for drivers who want to extract more performance from their BC Racing kit without upgrading to a higher series. Note that kits ordered with Swift Springs require additional lead time of a few weeks for conversion, so plan ahead if you need the kit by a specific date.