Rear Sway Bar for BMW Z4 M Roadster S54 (2003-2008)

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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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Sway Bar Bushing Bracket (Rear)
2X Entries Into Our F80 M3 Sweepstakes
URO - Corporate Logo
T#:37858397
Part#: 33556780707
In Stock
$ 21.99 USD
Free Shipping on orders $49 and up
$ 21.99 USD
Free Shipping on orders $49 and up
Rear sway bar crafted from durable stainless steel for superior strength and corrosion resistance, unlike OEM mild steel.
H&R - Corporate Logo
T#:1879
Part#: 71414
Ships in 3 Business Days
10% off MSRP $ 459.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 413.10 USD
Free Shipping
10% off MSRP
$ 459.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 413.10 USD
Free Shipping

H&R adjustable 25mm rear sway bar / swaybar for all 2001-2006 E46 M3 coupe and convertible. Includes bushings. Made in Germany.

  • Reduces body roll
  • Highest tensile strength available

H&R Sport Sway Bars are designed for drivers who desire improved handling without lowering or affecting ride quality. H&R Sport Sway Bars increase your suspension's roll stiffness or its resistance to roll in turns while maintaining ride comfort and dramatically increasing cornering control, lateral stability, and grip. A unique feature of H&R Sport Sway Bars are the smooth, machined-like forged ends that, for specific vehicles, allow for adjustability in stiffness giving you an unmatched level of precision and performance.


This item fits the following BMWs:
2001-2006 E46 BMW M3
2006-2008 Z4 BMW M Coupe/Roadster

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ECS Billet Rear Sway Bar Brackets With Polyurethane Bushings - Pair -...
10X Entries Into Our F80 M3 Sweepstakes
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
Sale - Save 10%
$ 113.99

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

$ 102.59 USD
Free Shipping
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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