BMW E9X 3 Series ECS performance sway bars

The BMW E9x has proven itself to be a true-blooded BMW, with handling dynamics that are close to perfect.

One area of this particular model's suspension that can use bolstering is at the sway bar.

ECS tested 28mm front and 15mm rear sway bars for this precise reason.
Reduce body roll in turns, stiffen suspension, and add a much needed dimension of handling predictability with the ECS units - designed to fit and function in perfect harmony with your BMW.

Add Even More Dynamic Control

Fits:
E9X 325i (2006)
E9X 328i (2007-2013)
E9X 330i (2006)
E9X 335i/iS (2007-2013)

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ECS Tuning Front & Rear Sway Bar Kit - 28mm Front, 15mm Rear

Eliminate excessive body roll, improve handling, and gain a more engaging driving experience. Includes matched front (28mm) and rear (15mm) sway bars with polyurethane bushings.

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:

ES#: 2828690

Mfg#: 007278ECSKT1

Qty:

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On SALE Save 10%

$575.99

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

$518.39 USD

Free Shipping

Lifetime Replacement

ECS Tuning Rear Sway Bar - 15mm

Eliminate excessive body roll, improve handling, and gain a more engaging driving experience. Use alone to reduce understeer or pair with an upgraded front bar.

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:

ES#: 2769931

Mfg#: 007278ECS02A

Qty:

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On SALE Save 15%

$244.99

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

$208.24 USD

Free Shipping

Lifetime Replacement

ECS Tuning Front Sway Bar - 28mm

Eliminate excessive body roll, improve handling, and gain a more engaging driving experience. Use alone to reduce oversteer or pair with an upgraded rear bar.

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:

ES#: 2769930

Mfg#: 007278ECS01A

Qty:

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On SALE Save 10%

$330.99

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

$297.89 USD

Free Shipping

Lifetime Replacement

ECS Billet E9x Non-M Rear Sway Bar Brackets With Polyurethane Bushings - Pair

Upgrade your OEM 13mm rear sway bar with our Billet and Poly. sway bar mounting solution!

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with OEM 13mm rear sway bar

Brand:

ES#: 4416114

Mfg#: 016921LA01

Qty:

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On SALE Save 10%

$110.99

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

$99.89 USD

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on orders $49 and up

Lifetime Replacement

ECS Billet Rear Sway Bar Brackets With Polyurethane Bushings - Pair

Upgrade your 23mm rear sway bar with our Billet and Poly. sway bar mounting solution!

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with Aftermarket 23mm rear sway bar

Brand:

ES#: 4418998

Mfg#: 016921LA09

Qty:

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On SALE Save 10%

$113.99

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

$102.59 USD

Free Shipping

on orders $49 and up

Lifetime Replacement

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BMW E9X 3 Series ECS performance sway bars

Add Even More Dynamic Control