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Bilstein Shocks & Suspension

Bilstein has been engineering monotube gas-pressure shocks in Germany since 1957. The company runs six manufacturing locations, employs over 4,000 people, and produces around 13 million shock absorbers a year, supplying OE suspensions for brands including Mercedes-AMG, Porsche, and BMW alongside its motorsport and aftermarket lines.

At Springrates we stock the full aftermarket range: Bilstein shocks, Bilstein coilovers, Bilstein shock absorbers, Bilstein adjustable shocks, Bilstein lowering springs, and complete Bilstein suspension kits. Browse the range below or read on for the difference between the B-series, the coilovers, and the 5100 truck range.

Bilstein Shock Technology

What separates Bilstein from the pack is its monotube gas-pressure design. Unlike conventional twin-tube shocks, a Bilstein monotube uses a single large-diameter chamber and an oversized piston, with high-pressure nitrogen separating the gas and oil. The architecture gives more consistent damping under repeated use, faster heat dissipation when the suspension is working hard, and better resistance to fade than a comparable twin-tube.

That's what Bilstein shock absorbers are known for in practice: precise initial response, consistent damping when the road gets rough, and long service life on the street and the track.

Bilstein B4 / B6 / B8

The B-series is the heart of Bilstein's street and OE-replacement lineup. Pick between them based on your springs and how you drive.

Bilstein B4 dampers are direct OE replacements. They match the factory valving, ride height, and fitment of your original shocks. This is the right Bilstein shock for restoring a daily driver to like-new ride quality.

Bilstein B6 performance dampers are a firmer upgrade designed to pair with stock-height factory springs. The application-specific monotube valving sharpens handling and stability for spirited daily driving, canyon roads, and heavier-loaded vehicles, all without a spring change.

Bilstein B8 performance plus dampers are built for lowered vehicles. Shortened and re-valved to work with aftermarket lowering springs, the B8 is the right shock when you're running a lowered stance and want the handling to keep up with the look.

Bilstein Coilovers

Bilstein coilovers pair the monotube damper with a threaded body for ride-height adjustment. The two main lines are the B14 (height-adjustable) and the B16 (height and damping-adjustable). The B16 in particular is the go-to for enthusiasts dialling in a setup for autocross, track days, or spirited canyon driving where the same car needs to behave differently on different surfaces.

On a back road or in a track session, Bilstein coilovers give you a tuning range without giving up the monotube's daily-drivable character.

Bilstein 5100 & Off-Road

The Bilstein 5100 series is the most popular aftermarket truck and SUV shock Bilstein makes. Ride-height adjustment is built into the front shock body via multiple snap-ring grooves, which lets you level the front end or lift it up to roughly 2.5 inches using the factory coil spring. That's a cost-effective alternative to spacers or full levelling kits.

A 46mm piston, patented digressive self-adjusting valving, and a corrosion-resistant zinc-plated body let the 5100 handle highway hauling, washboard fire roads, and rocky two-track without overheating. It's the default choice for daily-driven trucks running larger tyres and for off-road builds that need a shock to survive the use case.

Bilstein B12 Kits

Bilstein B12 suspension kits are matched packages of B8 shock absorbers and engineered lowering springs (typically Eibach). The drop is moderate, usually around 30mm front and rear depending on application, and the spring and damper rates are tuned together so the kit installs as a complete system rather than as separate parts.

Bilstein suspension kits like the B12 give you a lower stance, sharper handling response, and reduced body roll without compromising daily ride quality. Bilstein lowering kits sit at the integrated end of the upgrade path: matched components rather than mix-and-match parts.

Why Enthusiasts Choose Bilstein

Springrates carries a broad Bilstein product range, from coilover kits to Bilstein coil springs and complete suspension packages, so you can match the right setup to your car and your driving. Street performance, daily driving, autocross, canyon roads, and dedicated track use are all covered somewhere in the Bilstein lineup.

If you're looking for Bilstein shocks or a complete suspension kit and want help spec'ing the right combination, contact us at 903-993-0000 or support@springrates.com.

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FAQs

What is the difference between Bilstein B4, B6, and B8 shocks?

The B4 is an OEM replacement that restores original ride quality and handling using the same factory specification. The B6 is tuned beyond OEM spec for improved handling on standard-height vehicles, using a monotube gas pressure design. The B8 is built specifically for lowered vehicles, with firmer damping to suit reduced suspension travel. Choosing between them depends on whether your car is standard, modified, or lowered.

Are Bilstein shocks worth the price over standard replacements?

Bilstein supplies original equipment to manufacturers including Mercedes-Benz, Porsche, and BMW. The aftermarket range is built to the same production standard. The combination of gas pressure technology, monotube construction, and a lifetime warranty means they outlast cheaper alternatives by a significant margin.

What is the Bilstein B12 suspension kit and what does it include?

The B12 is a complete bolt-on suspension kit that combines monotube Bilstein shocks with Eibach lowering springs. It lowers the vehicle's centre of gravity, improves cornering, and gives a sportier stance. Because the shocks and springs are matched to work together, it avoids the compatibility issues that can arise from pairing components separately.

Can I run Bilstein B8 shocks with my existing lowering springs?

In most cases, yes. The B8 is designed specifically for lowered applications and is a common pairing with aftermarket lowering springs. The firmer damping compensates for the reduced suspension travel that comes with a lower ride height. Check fitment specifications for your vehicle before purchasing. If you're unsure, reach out and we'll confirm compatibility.

What Bilstein shocks are best for lifted trucks and off-road use?

The 5100 series is designed for trucks that have been levelled or lifted, with ride height adjustment built in. The 5165 and 7100 series step up to remote reservoir damping for more demanding off-road use, where sustained performance over rough terrain matters more than on-road comfort.

Do Bilstein coilovers allow ride height adjustment?

Yes. The B16 PSS9 and PSS10 coilover systems offer both ride height adjustment and rebound damping adjustment. This makes them the appropriate choice for drivers who want to tune their setup over time rather than fix it at installation. The B16 is also the most track-capable product in the range.

What warranty do Bilstein shock absorbers come with?

Bilstein backs its gas pressure shock absorbers with a lifetime warranty to the original purchaser, covering defects in workmanship and materials. If a shock is found to be defective, Bilstein will replace or repair it. The warranty applies to aftermarket purchases. Vehicles fitted with Bilstein as original equipment should direct warranty claims to the vehicle manufacturer.