EXPERT IN AUTO PARTS
22 December 2025 (updated) Table of Contents
High-quality shock absorbers ensure optimum driving safety, driving comfort, and stable road holding. Gas-charged shocks from brands such as BILSTEIN, SACHS, or MONROE are particularly impressive thanks to their consistent damping performance in all driving situations.
Which shock absorbers are most suitable depends on the vehicle type, driving behaviour, and budget: Premium manufacturers score points with long service life and precise response behaviour, while brands such as RIDEX offer an attractive price-performance ratio.
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1
Test winner in the premium segment
BILSTEIN B4 OE Replacement 19-109572
£33.49
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2
Best longevity
SACHS 318 202
£64.49
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3
Top electronics
MONROE C2516S
£115.99
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4
Adjustable
KONI 8705-1332
£284.50
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5
ORIGINAL quality
MEYLE 126 725 0024
£39.49
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6
Budget option
RIDEX 854S0086
£13.49
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Note on the rating methodology: This comparison is based on the evaluation of real customer reviews, technical product features, and current market prices. We have not carried out our own product tests, but have summarised the experiences of drivers and the technical specifications of the manufacturers.
Advantages
Disadvantages
The B4 programme includes both single-tube and twin-tube gas pressure variants, depending on the vehicle application. The shock absorber with item number 19-109572 is a twin-tube gas pressure shock absorber.
Recommended use
The BILSTEIN B4 shock absorber is ideal for vehicles with standard or slightly modified suspension and for drivers who prioritise quality, suitability for everyday use, and ride comfort rather than sports performance.
Technical data
| Specification | Value |
|---|---|
| Installation position | Rear axle |
| Shock absorber system | Twin-tube |
| Shock absorber type | Gas pressure |
| Product line | BILSTEIN B4 OE replacement |
| Shock absorber type | Not spring-loaded |
| Shock absorber mounting type | Eye at the bottom, stud at the top |
| Item number | 19-109572 |
| EAN number(s) | 4025258475710 |
| Condition | Brand new |
Reasons to buy
Advantages
Disadvantages
For decades, SACHS shock absorbers have been synonymous with German engineering expertise in the field of chassis technology. The SACHS shock absorber with part number 318 202 is a gas-pressure twin-tube shock absorber specially developed for 4-link suspension systems. It is attached at the top with a stud and at the bottom with an eye.
Technical data
| Specification | Value |
|---|---|
| Installation position | This feature varies depending on the vehicle model |
| Shock absorber system | Twin-tube |
| Shock absorber type | Gas pressure |
| Shock absorber design | Telescopic shock absorber |
| Shock absorber mounting type | stud at the top, eye at the bottom |
| Item number | 318202 |
| EAN number(s) | 4013872976881 |
| Axle | 4-link |
| Condition | Brand new |
Reasons to buy
Advantages
Disadvantages
The MONROE C2516S is a gas pressure shock absorber with electronically adjustable damping force based on CVSAe technology, as used in modern original equipment systems. The electronically adjustable damping force enables the car to switch between sporty and comfortable driving behaviour. CVSAe technology continuously optimises the damping characteristics. With a weight of 5.568 kg, the shock absorber is heavier than conventional shock absorbers, but offers significantly more functionality. It is attached at the top with a stud and at the bottom with a clamp.
Technical data
| Specification | Value |
|---|---|
| Installation position | This feature varies depending on the vehicle model |
| Shock absorber system | Electronically adjustable damping force |
| Shock absorber type | Gas pressure |
| Shock absorber design | Strut |
| Shock absorber mounting type | Pin at the top, clamp at the bottom |
| Item number | C2516S |
| EAN number(s) | 5412096740626 |
| Weight [kg] | 5.568 |
| Condition | Brand new |
Reasons to buy
Advantages
Disadvantages
The KONI 8705-1332 is an oil-pressure twin-tube shock absorber with frequency selective damping (FSD). It has a length of 772 mm (extended) and 590 mm (retracted), with mounting at the top by means of a stud, and a clamp at the bottom.
The special damping characteristics ensure that comfort and stability are not mutually exclusive: This makes it a genuine alternative to electronically controlled suspension systems.
Technical data
| Specification | Value |
|---|---|
| Installation position | This feature varies depending on the vehicle model |
| Shock absorber system | Twin-tube, adjustable when installed |
| Shock absorber type | Oil pressure |
| Shock absorber design | Strut |
| Shock absorber mounting type | Clamp at the bottom, stud at the top |
| Item number | 8705-1332 |
| EAN number(s) | 8712167159430 |
| max. length [mm] | 772 |
| min. length [mm] | 590 |
| Condition | Brand new |
Reasons to buy
Advantages
Disadvantages
Technical data
| Specification | Value |
|---|---|
| Installation position | Rear axle |
| Shock absorber system | Twin-tube |
| Shock absorber type | Gas pressure |
| Supplementary info | ORIGINAL quality |
| Shock absorber design | Telescopic shock absorber |
| Shock absorber mounting type | Eye at the bottom, stud at the top |
| Item number | 126 725 0024 |
| EAN number(s) | 4040074572603 |
| Condition | Brand new |
Reasons to buy
Advantages
Disadvantages
The RIDEX 854S0086 is a gas pressure shock absorber for the rear axle (strut suspension) with a length range of 359 mm retracted to 593 mm extended. It has a piston rod diameter of 12.5 mm and a net weight of around 1.55 kg. It is mounted by means of an eye at the bottom and a stud at the top.
Technical data
| Specification | Value |
|---|---|
| Installation position | Rear axle |
| Shock absorber type | Gas pressure |
| Shock absorber design | Strut |
| Shock absorber mounting type | Eye at the bottom, stud at the top |
| Item number | 854S0086 |
| EAN number(s) | 4059191340446 |
| max. length [mm] | 593 |
| min. length [mm] | 359 |
| Condition | Brand new |
Reasons to buy
Tip from AUTODOC experts: When replacing shock absorbers, we generally recommend replacing them on each axle, i.e. always replacing both shock absorbers on one axle (front or rear axle) at the same time. One-sided replacement can lead to unbalanced damping behaviour, which impairs both ride comfort and driving safety. After fitting new shock absorbers, a wheel alignment should also always be carried out to ensure optimum suspension geometry and tyre usage.
The shock absorber is a central component of the chassis. It ensures stability, comfort, and safe handling. Which brand you choose influences the riding handling, durability, and quality of the suspension. There are numerous suppliers on the market – from premium manufacturers to low-cost alternatives. Some focus on sporty performance, others on comfort or original equipment quality. Below we present the most important brands and their strengths.
When choosing the best shock absorbers, you should consider several factors. Defective shock absorbers should be checked and replaced in good time, and compatibility with your vehicle model is particularly important when selecting new shock absorbers.
Gas-pressure shock absorbers deliver constant performance even at high temperatures and with a sporty driving style, while oil-pressure versions are designed primarily for comfort thanks to their softer response behaviour.
Another important aspect is the shock absorber system. There are single-tube, twin-tube, and electronically adjustable systems. Twin-tube shock absorbers are the standard and offer good value for money, while single-tube systems, such as the Bilstein B4 models, enable more precise handling. Electronically adjustable systems automatically adjust the damping force to maximise ride comfort. The design, i.e. strut or telescopic shock absorber, also depends on the vehicle type and axle design. Also take into account the costs for shock absorber replacement, which vary depending on the vehicle model. Pay attention to quality features such as corrosion protection, sealing systems, and manufacturer warranties to ensure a long service life and permanently stable driving characteristics.
Expert tip: The service life of shock absorbers is often underestimated. How long shock absorbers last depends on driving style and road conditions, but is typically between 80,000 and 120,000 kilometres. Regular checks by means of a shock absorber test help to recognise problems at an early stage.
Shock absorbers on the front and rear axles fulfil different tasks in the chassis. The front shock absorbers have to absorb significantly higher loads, as they bear a larger proportion of the vehicle weight in addition to the steering and braking forces. For this reason, more robust suspension struts with higher damping force are usually installed on the front axle. The rear shock absorbers are primarily used to stabilise the rear axle and control body movements during acceleration. Many vehicles , such as those from VW, BMW or Audi, use MacPherson struts at the front, while telescopic shock absorbers for multi-link axles are often used at the rear. Changing the front and rear shock absorbers requires different tools and techniques. In addition, the front shocks are generally subject to faster wear than the rear ones due to the higher dynamic load.
The selection of the most reliable shock absorbers depends on the requirements of your vehicle model. The BILSTEIN B4 shock absorber tops the ranking with 9.36/10 points and offers outstanding performance for drivers who value maximum safety and precise handling. The constant damping force and proven gas pressure technology justify the higher investment for those who prioritise longevity.
The SACHS shock absorber 318 202 (9.24/10) impresses with its high quality and excellent corrosion protection – ideal for drivers in regions with adverse weather conditions. The twin-tube system is particularly suitable for 4-link systems and offers optimum cornering behaviour. The MONROE shock absorber C2516S (9.14/10) is a good choice for modern VAG vehicles with DCC systems, as the electronically adjustable damping force optimally supports adaptive suspension systems.
The RIDEX shock absorber 854S0086 (8.33/10) is a solid alternative for price-conscious buyers. Thanks to PTFE seals and a polished piston rod, it offers reliable quality for everyday use and impresses with its good price-performance ratio. The right shock absorber should always be selected based on the vehicle model, driving style, and budget.
If your shock absorbers are squeaking or leaking, you should not continue driving with broken shock absorbers, but replace them as soon as possible. Safety first – high-quality shocks are an investment in your driving safety and the value retention of your vehicle. Repairing shock absorbers is generally not a permanent solution, which is why experts generally recommend replacing them completely.
At AUTODOC you will find a large selection of shock absorbers for your car – from budget models to premium solutions. Our experts are always on hand to help you make the right choice and find the optimum shocks for your vehicle. With over 6.7 million spare parts from around 2,500 brands, AUTODOC, Europe's largest e-commerce platform for automotive parts, ensures you find the right product at the best price.
Learn how to change shock absorbers correctly in this video tutorial to avoid common mistakes during installation.
The best type of shock absorber for your vehicle depends on its intended use and your driving behaviour.
Gas pressure shock absorbers such as the BILSTEIN B4 offer consistent performance even at high temperatures and are the first choice for drivers who value precise handling and driving stability. Twin-tube systems are the standard in the passenger car sector, as they offer a good balance between comfort, durability, and price. Single-tube shock absorbers generally respond more directly and are therefore often used in vehicles with a sporty suspension. For particularly demanding applications, electronically adjustable systems, such as the Monroe C2516S with CVSAe technology, offer automatic adjustment of the damping force to the respective driving situation and road surface.
The Monroe C2516S shock absorber with electronically adjustable damping force provides very high ride comfort, as it adapts its damping to different driving situations in real time. SACHS shock absorbers also impress with a balance of comfort and stability and ensure harmonious interaction between the springs, tyres, and bodywork.
The service life of a shock absorber depends heavily on driving style, road conditions, and vehicle load. High-quality shock absorbers from brands such as BILSTEIN or SACHS reach an average of 80,000 to 120,000 kilometres, while very cheap components often wear out earlier. Regular checks of shock absorbers, stabilisers, and mount bearings extend the service life considerably. Quality pays off in the long term, especially for mid-range and luxury class vehicles such as BMW.
Which variant is better depends on the type of vehicle and the area of application. In most cases, gas pressure shock absorbers offer constant damping performance at all temperatures, react less to heating, and contribute to stability. This is why many manufacturers, including TRW, Bilstein and SACHS, favour this technology.
Oil-pressure shock absorbers, from KONI, for example, can offer advantages in vans, MPVs, or motorhomes because they respond more smoothly and allow particularly comfort-oriented handling. For most passenger car applications, however, a gas pressure shock absorber is the recommended choice as it covers a wider range of applications and offers a good balance between comfort and stability.
TRW Shock absorber
Front Axle, Gas Pressure, Ø: 45, Twin-Tube, Suspension Strut
Sold by AUTODOC
BILSTEIN Shock absorber
Rear Axle, Gas Pressure, Twin-Tube, Absorber does not carry a spring
Sold by AUTODOC
TRW Shock absorber
Front Axle, Gas Pressure, Ø: 45, Twin-Tube, Suspension Strut
Sold by AUTODOC
SACHS Shock absorber
Gas Pressure, Twin-Tube, Suspension Strut
Sold by AUTODOC
GH Suspension Strut
Front Axle, Right, Left, Front Axle Right, Front Axle Left
Sold by AUTODOC
BILSTEIN Shock absorber
Front Axle Right, Gas Pressure, Twin-Tube, Suspension Strut
Sold by AUTODOC
GH Suspension Strut
Front Axle, Right, Left, Front Axle Right, Front Axle Left
Sold by AUTODOC
MONROE Shock absorber
Gas Pressure, Electronically adjustable shock strength, Suspension Strut
Sold by AUTODOC
BILSTEIN Shock absorber
Front Axle, Oil Pressure, Twin-Tube, Suspension Strut
Sold by AUTODOC
GH Suspension Strut
Front Axle, Right, Left, Front Axle Right, Front Axle Left
Sold by AUTODOC
BILSTEIN Shock absorber
Rear Axle, Gas Pressure, Monotube, Absorber does not carry a spring
Sold by AUTODOC
MONROE Shock absorber
Gas Pressure, Electronically adjustable shock strength, Suspension Strut
Sold by AUTODOC
KONI Shock absorber
Oil Pressure, 387, Twin-Tube, Telescopic Shock Absorber
Sold by AUTODOC
TRW Shock absorber
Gas Pressure, Ø: 48, Twin-Tube, Telescopic Shock Absorber
Sold by AUTODOC
MONROE Shock absorber
Gas Pressure, Twin-Tube, Telescopic Shock Absorber
Sold by AUTODOC