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WRX · Handling

WRX Rear sway bar

Your WRX

Pick your year to see what fits.

This page covers the WRX and STI. The non-turbo Impreza has its own page.

Flatter, less understeer
Medium$250–$3201–2 hrs
All WRX mods

Why do it

A thicker rear bar is the best-value handling mod on these cars: it cuts understeer and body roll.

Tools you'll need

Starting out? See our budget tool list.

Parts to buy

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Steps

  1. Remove the stock bar

    • Raise the rear, undo the end links and brackets and take the bar out.
    Watch this step (nukem384, on a 2003 WRX) (0:25–0:54)

  2. Fit the new bar

    • Grease the bushings, fit the bar and bolt up the brackets.
    Watch this step (0:54–1:32)

  3. Fit the end links

    • Connect the end links to the hole you want and tighten everything.
    Watch this step (1:32–1:49)

  4. Remove the stock rear bar

    • Undo the end links and brackets and take the bar out.
    Watch this step (COBB's install video, 08-14 WRX/STI) (3:32–4:46)

  5. Fit the new rear bar

    • Grease the bushings, fit the bar and tighten everything.
    Watch this step (4:46–5:54)

  6. Remove the old bar

    • Undo the end links and brackets.
    Watch this step (SubiSpeed, 2015 WRX & STI) (1:13–2:53)

  7. Free stuck end links

    • Rusty end links may need a hex key to hold the stud.
    Watch this step (2:53–4:06)

  8. Prepare the new parts

    • Grease the bushings and set up the end links.
    Watch this step (5:44–7:01)

  9. Fit the new bar

    • Bolt up the bar and end links.
    Watch this step (7:01–10:14)

  10. Fit the support braces

    • Fit any braces that came with your bar.
    Watch this step (10:14–11:56)

  11. Remove the old bar

    • Undo the end links and brackets and take the bar out.
    Watch this step (Cameron Alford, on a 2022+ WRX) (2:36–4:12)

  12. Fit the new bar

    • Grease the bushings, fit the bar and tighten everything.
    Watch this step (4:12–5:53)

How to know it worked

Did this guide work for you?

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.