EPDM Shock Absorber Stop Rubber
The shock absorber stop rubber is a small component with a big impact. It ensures that the last bit of suspension travel remains controllably usable even during sporty driving and prevents the suspension from bottoming out harshly. Thanks to its taller design and special contour,
it acts like a progressive spring over the last few millimeters of suspension travel—providing more reserve capacity exactly where it matters most.
High-quality EPDM
Protection against hard bottoming
Progressive effect at the end of the suspension travel
Suitable for sporty driving
Function and application
The rubber stopper performs an important protective and regulating function in the shock absorber. Shortly before the full suspension travel is
exhausted, it builds up additional resistance and slows the remaining movement in a controlled manner. This makes
the suspension more controllable at the limits while also protecting mechanical components.
Prevents the shock absorber from bottoming out during high-speed driving, on rough roads, or under heavy loads.
Makes the final portion of the suspension travel specifically usable, rather than letting it be used up uncontrollably.
Particularly useful for sporty vehicles and setups with high suspension loads.
Material and Durability
The stop rubber is made of high-quality EPDM. This material is not only highly resistant to
normal environmental influences such as ozone and UV radiation,
but also exhibits good resistance to many chemical liquids. This ensures that functionality is maintained over the long term even under demanding operating conditions.
High resistance to aging even under changing weather conditions.
Resistant to ozone and UV radiation.
Good resistance to many chemical influences relevant to the chassis environment.
Effect during driving
In practice, the stop rubber does not simply feel like a hard end stop. Due to its higher profile and contour, it functions more like an additional progressive spring,
which increases significantly over the last few millimeters of suspension travel. This improves reserves at the limit
and provides more control when the suspension is heavily loaded.
Comparable to a significantly progressive spring in the final portion of the suspension travel.
The taller design ensures that controlled resistance builds up earlier.
Better reserves during sporty riding, braking maneuvers, and on uneven road surfaces.
Noticeably more controlled behavior instead of a hard, dry bottoming-out.
Installation Instructions
Replacing the stop rubber is only possible by disassembling the shock absorber.
Depending on the design, this requires removing the spring base or the adjuster.
The replacement should therefore only be performed with the necessary care and appropriate tools.
Remove the shock absorber and safely relieve the load.
Remove the spring base or adjuster to gain access to the stop rubber.
During reassembly, ensure that all components fit properly and that the preload is correct.
Scope of delivery
- Shock absorber stop rubber made of EPDM
FAQ: Shock Absorber Stop Rubber
Frequently Asked Questions
What is the stop rubber for?
It prevents hard bottoming out at the end of the suspension travel and makes this final range usable in a controlled manner.
Why does this stop rubber act progressively?
Due to its taller design and special contour, it builds up increasingly more resistance over the last few millimeters of travel,
thereby behaving similarly to a progressive spring.
How does it feel while riding?
Not like a hard end stop, but rather like a distinctly progressive additional spring over the last
few millimeters of travel.
Why is EPDM used?
EPDM is highly resistant to ozone, UV radiation, and many chemical liquids, making it ideal for long-term use in suspension systems.
Can the stop rubber be replaced without disassembling the shock absorber?
No. The shock absorber must be disassembled for replacement. To do this, the spring base or adjuster must be removed.
For whom is a new stop rubber particularly useful?
For drivers who drive their suspension in a sporty manner, subject it to high loads, or wish to properly overhaul a worn shock absorber.
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