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The bump stop is a stiff foam block that slides over the shaft of your front strut or rear shock. Under full compression the bump stop prevents the shock from completely bottoming-out, causing damage to the shock or to the chassis. In other scenarios the bump stop can actually play an active role in the handling and stiffness of the car. Because of their placement, bump stops are subjected to debris, moisture, and heat and this can degrade its performance or cause it to fail compeltely. BMW insists on new bump stops any time a new shock is installed on a car*.
* - many aftermarket performance shocks like Bilstein or KONI will come with their own bump stops and new ones are not required. This does not apply to any Bilstein or KONI or other brand marked as "OEM".
Not for models equipped from the factory with a M Sport suspension. Those suspensions take a shorter and stiffer bump stop.
This is a bump stop manufactured by Rein (CRP) Automotive - an original supplier to BMW for many mounts and bushings. As an OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag. This part has a two year warranty.
BMW Fitments:
3 Series E30 (84-91) > 318i E30 (84-91) > 318is E30 (84-91) > 325e E30 (84-91) > 325es E30 (84-91) > 325i E30 (84-91) > 325is E30 (84-91) > 325ix 3 Series E36 (92-99) > 318i M42 E36 (92-99) > 318i M44 E36 (92-99) > 318ic M42 E36 (92-99) > 318ic M44 E36 (92-99) > 318is M42 E36 (92-99) > 318is M44 E36 (92-99) > 323ic E36 (92-99) > 323is E36 (92-99) > 325i E36 (92-99) > 325ic E36 (92-99) > 325is E36 (92-99) > 328i E36 (92-99) > 328ic E36 (92-99) > 328is 3 Series E36/5 (95-99) > 318ti M42 E36/5 (95-99) > 318ti M44 5 Series E28 (82-88) > 528e E28 (82-88) > 533i E28 (82-88) > 535i E28 (82-88) > M5 (87-88) 5 Series E34 (89-95) > 525i M20 E34 (89-95) > 525i M50 E34 (89-95) > 530i E34 (89-95) > 535i E34 (89-95) > 540i 5 Series E39 (97-03) > 525i E39 (97-03) > 528i 97-98 E39 (97-03) > 528i 99-00 E39 (97-03) > 530i E39 (97-03) > 540i 6 Series E24 (77-89) > 633CSi E24 (77-89) > 635CSi E24 (77-89) > M6 7 Series E32 (88-94) > 735i E32 (88-94) > 735iL E32 (88-94) > 740i E32 (88-94) > 740iL E32 (88-94) > 750iL 7 Series E38 (95-01) > 740i E38 (95-01) > 740iL E38 (95-01) > 750iL
$9.99
Front Bump Stop, Rein - E30, E36, E28, E34, E39, E24, E32, E38
An overlooked but essential component in your car's suspension. Replaces BMW part #31331124449
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