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

Bilstein B4 is the OEM replacement (standard quality). The Bilstein B6 offers better performance and firmness at standard ride height. The Bilstein B8 is a shortened sport damper specifically designed for use in combination with lowering springs (such as Eibach or H&R).

What is the Bilstein B12 Pro-Kit?

The Bilstein B12 Pro-Kit is a complete sports suspension set consisting of four shortened Bilstein B8 shock absorbers combined with factory-matched Eibach Pro-Kit lowering springs for ultimate handling.

Bilstein Coilover Kits and Shock Absorbers

Q: Why choose Mono-tube (Single-tube) Gas Pressure Technology?

Unlike conventional dampers, Mono-tube technology separates the oil and high-pressure nitrogen gas. This prevents foaming (cavitation), even under extreme loads and high temperatures, ensuring the damper consistently maintains its maximum performance.

Bilstein Coilover Kits & Shock Absorbers

When August Bilstein laid the first stone for the innovation factory in Altenvoerde, Germany, in 1873, no one could have anticipated the decisive influence that BILSTEIN products would one day have on automotive safety. Today, Bilstein sets the absolute benchmark for high-quality shock absorbers. At Wheels 'N Customs we supply and install the complete Bilstein range.

BILSTEIN

DRIVE THE LEGEND

Key facts (TL;DR):
Bilstein is renowned worldwide for inventing the extremely robust gas-pressure shock absorber (Mono-tube Upside-Down technology). The range spans from OEM replacement dampers (B4) and performance-oriented sport dampers (B6/B8) to complete sport suspensions (B12) and premium coilover kits (B14/B16) offering stepless adjustability for road and track.

Bilstein yellow/blue sport shock absorber detail

1. The Bilstein Line-up Overview

Type / Line	Features	Application / Purpose
Bilstein B4	Standard gas-pressure replacement damper (black)	OEM-quality replacement for faulty/leaking original shock absorbers.
Bilstein B6	Performance damper (yellow), firmer & sportier	Improved, tighter handling at the original ride height (no lowering required).
Bilstein B8	Shortened performance damper for lowered cars	Ideal and designed to be combined with lowering springs (such as Eibach / H&R).
Bilstein B12	Complete sport suspension (B8 dampers + Eibach springs)	Fixed lowering (on average 25-40mm) with perfectly matched handling.
Bilstein B14 / B16	Coilover kits with stepless height adjustment	Maximum control, track use and individual height setting (B16 also offers damping adjustment).

Installation of your Bilstein Coilover Kit and/or Shock Absorbers

€ 356,- to € 488,- incl. VAT

The above price is an indication for installation of the shock absorbers/coilover kit only and is including 3D alignment of your vehicle after installation.

Note: The exact installation hours depend on the condition of the vehicle. Labour hours are calculated afterwards. Your car must always remain with us for at least 1 working day for installation. If the kit needs to be configured via software (e.g. B16 Ridecontrol), additional costs may apply.

2. Frequently Asked Questions (FAQ)

Why choose Mono-tube (Single-tube) Gas Pressure Technology?

Unlike cheaper, conventional twin-tube dampers, Bilstein's Mono-tube technology separates the oil and high-pressure nitrogen gas by means of a piston. This prevents foaming in the oil (cavitation), even under extreme loads and high temperatures, ensuring the damper consistently delivers its maximum and safe performance.

Can I use Bilstein B6 dampers if I want to lower my car?

No. If you are fitting lowering springs, you must choose the Bilstein B8 series. In terms of internal operation and firmness the B8 is identical to the B6, but it features a shortened piston rod. This keeps a lowering spring under the correct (safe) preload instead of rattling loose in the spring seat when the car unloads.

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Request a No-Obligation Quote

Interested in Bilstein shock absorbers or a coilover kit for your car? Then please fill in the form below (always include your registration number or model). We will soon send you a tailored quotation and will be happy to schedule the installation.