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Rear Sway Bar

Interested in upgrading your BMW's rear sway bar? We carry a variety of rear sway bar options for your BMW. Check out our front sway bar section or front & rear if you're interested in a complete solution.

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ECS Performance Rear Sway Bar - 15mm - E9X E82/88 Non-M
ECS Performance Rear Sway Bar - 15mm - E9X E82/88 Non-M
ECS - Corporate Logo
T#:363189
Part#: 007278ECS02A
In Stock
Sale - Save 15% $ 244.99

This product was last offered at the strikethrough price on
06-13-2026

$ 208.24 USD
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Sale - Save 15%
$ 244.99

This product was last offered at the strikethrough price on
06-13-2026

$ 208.24 USD
Free Shipping
Add to Wish List
Looking to improve your car's handling in the corners? ECS Tuning's rear non-adjustable sway bar is a cost-effective way to limit body roll and keep your wheels planted when entering a corner at higher speeds. Sway bars are a great way to improve handling without sacrificing ride quality or reliability! Sway bars are typically sold as a front and rear set to balance the handling. But a rear sway bar only can also have excellent benefits, especially on a street car. Going with a larger rear bar will improve steering and handling even at low-moderate speeds. ECS has specified a 15mm sway bar that has been fine-tuned for use on the E9X and E82 models. Urethane bushings with a reinforced inner core that requires no lubrication are included.
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ECS Billet Rear Sway Bar Brackets With Polyurethane Bushings - Pair - E9x Non-M
ECS Billet Rear Sway Bar Brackets With Polyurethane Bushings - Pair -...
For use with OEM 13mm rear sway bar
ECS - Corporate Logo
T#:3180514
Part#: 016921LA01
Ships on Sep 29, 2026
Sale - Save 10% $ 110.99

This product was last offered at the strikethrough price on
06-14-2026

$ 99.89 USD
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Sale - Save 10%
$ 110.99

This product was last offered at the strikethrough price on
06-14-2026

$ 99.89 USD
Free Shipping
Add to Wish List
The ECS Tuning Billet Rear Sway Bar Mounting Kit was designed, engineered, tested and quality inspected thanks by their Research and Development team in Wadsworth, Ohio facility. ECS ensures that the highest level of precision and quality is delivered throughout rigorous long term product testing and leading edge product development methods. This kit provides your vehicle with a more rigid mounting solution from the sway bar to chassis than the OEM steel brackets. With an improved sway bar mounting bracket and the included polyurethane sway bar bushings, you can expect to achieve an increase in rear sway bar effectiveness and less body roll as a result.
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ECS Billet Rear Sway Bar Brackets With Polyurethane Bushings - Pair - E9x Non-M, E46, E53
ECS Billet Rear Sway Bar Brackets With Polyurethane Bushings - Pair -...
For use with Aftermarket 23mm rear sway bar
ECS - Corporate Logo
T#:3443018
Part#: 016921LA09
Ships on Sep 29, 2026
Sale - Save 10% $ 113.99

This product was last offered at the strikethrough price on
06-14-2026

$ 102.59 USD
Free Shipping
Add to Wish List
Sale - Save 10%
$ 113.99

This product was last offered at the strikethrough price on
06-14-2026

$ 102.59 USD
Free Shipping
Add to Wish List
The ECS Tuning Billet Rear Sway Bar Mounting Kit was designed, engineered, tested and quality inspected thanks by their Research and Development team in Wadsworth, Ohio facility. ECS ensures that the highest level of precision and quality is delivered throughout rigorous long term product testing and leading edge product development methods. This kit provides your vehicle with a more rigid mounting solution from the sway bar to chassis than the OEM steel brackets. With an improved sway bar mounting bracket and the included polyurethane sway bar bushings, you can expect to achieve an increase in rear sway bar effectiveness and less body roll as a result.
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BMW Rear 20mm Nurburgring Sway Bar Upgrade - E34 525i, 530i, 535i, 540i & M5
BMW Rear 20mm Nurburgring Sway Bar Upgrade - E34 525i, 530i, 535i, 54...
Genuine European BMW - Corporate Logo
T#:338670
Part#: TMS16594
Ships on Feb 5, 2027
Starting at $ 335.29 USD
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Starting at $ 335.29 USD
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Add to Wish List
For the M5 3.8 BMW offered an optional Nurburgring handling package with this 20mm rear sway bar. This is currently the biggest rear sway bar available anywhere and is a direct bolt-in replacement for the stock or aftermarket bar. This bar is complete with new rubber bushings with new brackets and links optional.

The larger bar will make the suspension stiffer than before, with less roll and less understeer. The larger rear bar will actually make the rear end rotate easier making the car more agile in tight corners. If you have stock E34 (non-sport) swaybars on now this 20mm Nring bar will be a huge difference. If you have an E34 sport suspension, E34 M5, 540i M Sport, or aftermarket cars the difference will be smaller. But since BMW installed this as part of a factory handling package it will be an improvement for track, autocross, or backroad handling.

Included in this package:
  • 33552227416 - E34 M5 3.8 Nurburgring 20mm rear swaybar
  • 33552227240 - 20mm rear swaybar bushings
  • optional 33506779734 - rear swaybar bushing brackets (not required but get rid of those rusty original ones!)
  • optional 33551135307 - rear swaybar links
    This sway bar upgrade fits the following BMWs:
    1989-1995 E34 BMW 525i 530i 535i 540i M5
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