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E90/E92/E93 · Handling
E90/E92/E93 Sway bars
Your E90/E92/E93
Pick your year to see what fits.
This page covers the US sedan, coupe and convertible. It doesn't cover the 335d diesel or the E91 wagon.
Flatter cornering
Medium$280–$6002–3 hrs
Why do it
Stiffer bars cut body roll and make the car feel more planted without hurting the ride.
Tools you'll need
- Jack and 4 jack stands
- Socket set
- Torx bits
- Torque wrench
- Jack and 4 jack stands
- Socket set
- Torque wrench
- Jack and 4 jack stands
- 13mm socket
- 10mm socket
- Torque wrench
Starting out? See our budget tool list.
Parts to buy
- Whiteline BBF43 27mm front sway bar (335i) Stiffer front bar. Rear-wheel-drive cars only.Fits 2007–2013 · 335i (N54), 335i (N55)
- Whiteline BBR44 20mm rear sway bar (335i) Listed through 10/2011 production.Fits 2007–2011 · 335i (N54), 335i (N55)
- Hotchkis 22839F front sway bar (M3) The exact bar in our video. 4 stiffness settings.Fits 2008–2013 · M3
Doesn't fit your car (0)
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Before you start
- Set the end links with the suspension at ride height so the bar isn't preloaded.
- Set the end links with the suspension at ride height so the bar isn't preloaded.
Steps
Swap the front bar
- Remove the under panel, undo the end links and brackets, work the old bar out and fit the new one.
Swap the rear bar
- Undo the end links and brackets, drop the old bar and fit the new one.
Remove the stock bar
- Remove the felt panel and aluminum plate, undo the two 13mm bolts on each bracket, and disconnect the end links.
Fit the new bar
- Grease the bushings, slide on the brackets, work the bar over the control arm and torque the brackets to 16 ft-lb.
Set the end links
- Refit the plates, compress the suspension to ride height, and connect the end links with no preload.
How to know it worked
- No clunks over bumps.
- Bolts torqued with the car at ride height.
- No clunks over bumps.
- No rubbing at full lock.
- No clunks over bumps.
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Safety first
- Park on flat ground, set the parking brake and chock the wheels.
- Never get under a car held up only by a jack. Use jack stands.
- Let the engine and exhaust cool first.
- Disconnect the battery before unplugging electrical parts.
- Wear safety glasses.
- If something doesn't match your car, stop and ask a shop.
Follow your part's instructions and your service manual's torque specs.