Parts for your 2012 Holden Commodore-Bump stops

2012 Holden Commodore bump-stops: what they do and when to replace them

Bump-stops are absolutely fitted to the 2012 Holden Commodore (VE Series II). Technical sources that specify their presence include the Holden/GM VE Series Service Manual (Suspension – Front/Rear), which lists “jounce bumpers” on the front MacPherson struts and rear dampers, and major component catalogues used in workshops such as the Monroe Australia Strut-Mate protection kits and KYB Australia strut boot/bump stop kits for VE/WM 2006–2013. So yes—this Commodore runs bump-stops front and rear.

On this model, the front bump-stops live on the strut shaft under the dust boot, while the rears are paired with the shock or mounted to the body, depending on variant. They act like compact secondary springs. When the car hits a big bump or is loaded up, the bump-stop cushions the final part of the suspension travel. That protects the strut/shock internals, reduces nasty bottoming-out noises, keeps the tyre in better contact with the road, and helps tidy up body control and NVH.

They’re usually made of microcellular polyurethane foam. Over time, heat, road grime and age make them go crumbly or mushy. Once they’re perished, the Commodore can feel harsh on big hits, clunk over speed humps, or show scuffing where the suspension has been bottoming. A quick look when the wheels are off will often reveal split or collapsed bump-stops and torn dust boots.

• When to replace:
  • Visible cracking, missing chunks or oil-soaked, mushy foam
  • Harsh “bang” on big bumps or towing, or lowered ride height
  • Every time struts/shocks are replaced, or around 80,000–120,000 km depending on use

• Service tips for a VE II Commodore:
  • Replace in axle pairs and always fit new dust boots with them
  • Torque suspension fasteners at normal ride height to avoid bush preload
  • Get a wheel alignment if struts are removed
  • For lowered cars, use appropriately sized performance bump-stops to preserve travel
  • Inspect strut top mounts and spring isolators while you’re in there

Owners who tow, carry loads, or drive on rough roads will get real benefits from fresh bump-stops—smoother hits, less shock wear, and a quieter cabin. It’s a small, affordable part that makes a big difference to how the Commodore rides and lasts.

Popular questions about 2012 Holden Commodore bump-stops

How do you tell if the bump-stops need replacing?
Look for cracks, missing chunks, or foam that’s gone soft and sticky. On the road, you’ll notice a sharp thud over big bumps or when the car’s loaded up. If the dust boots are torn, the stops usually won’t be far behind, so plan to do both.

Are the front and rear bump-stops the same on a VE Series II?
No. The fronts sit on the strut shaft under the boot and are shaped for the MacPherson strut. Rears are matched to the rear damper/body mounting. Always buy the correct position-specific parts for your exact body style and suspension option.

Is it safe to drive without bump-stops?
The car might still move, but it risks bottoming out, damaging shocks and mounts, and upsetting tyre grip. It’s not recommended—fit proper bump-stops to protect the suspension and keep the Commodore riding nicely.