Parts for your 2013 Holden Commodore-Bump stops

2013 Holden Commodore bump-stops: what they do and when to replace them

Yes, bump-stops are fitted and very relevant on the 2013 Holden Commodore (VE Series II and VF Series I). Technical sources including the GM Holden VE/VF Service Manual, the Holden Electronic Parts Catalogue (EPC), and aftermarket catalogues from Monroe and KYB all list front strut jounce bumpers and rear shock bump-stops/boots for these models. That confirms every 2013 Commodore runs bump-stops as part of its suspension travel control.

Bump-stops act like a soft, secondary spring at the end of suspension travel. Usually made from micro‑cellular foam or rubber, they prevent metal‑to‑metal contact when the car hits big bumps, carries heavy loads, or runs lowered springs. On a Commodore, they protect struts and shocks, reduce nasty bottoming‑out thumps, help keep tyres off guards, and calm down harshness that can rattle through the cabin. They also support alignment under load, which helps keep the car tracking straight and the tyres wearing evenly.

As part of routine servicing, it’s smart to inspect the bump-stops whenever the shocks/struts or tyres are checked—roughly every 40,000–60,000 km, or sooner if the car tows, carries loads, or runs lowered suspension. Because they live inside the wheel wells, they cop heat, dirt, and UV, the foam can crack, compress, or tear, and the dust boots can split, letting grit chew into the strut/shock rod.

• Signs they’re due: repeated bottoming on speed humps, new clunks at full compression, a harsher ride over bigger hits, torn or missing dust boots, visibly perished or crumbled bump-stops, or uneven tyre wear after big bumps.
• Good practice: replace bump-stops in axle pairs, choose OE‑style micro‑cellular foam units matched to your model, always fit new dust boots with them, torque everything to factory spec, and book a wheel alignment after front strut work.
• Lowered setups: don’t delete them. Use appropriately sized performance bump-stops designed for reduced travel to keep progression and avoid smash‑throughs.

For the 2013 Commodore, technicians typically replace bump-stops when fitting new shocks/struts, as access is easiest and the parts age at a similar rate. Fresh bump-stops help the car feel tighter over big hits, protect pricey dampers, and keep the Commodore’s big‑car composure—whether it’s a weekday commute or a weekend run down the coast.

Popular questions

Do 2013 Commodores have bump-stops at both ends?
They do. The front MacPherson struts use jounce bumpers on the strut shaft, and the rear shock assemblies have their own bump-stops and boots. This layout is shown in the GM Holden service documentation and replicated across major parts catalogues, so owners can plan front and rear inspections during suspension work.

How often should bump-stops be replaced on a 2013 Commodore?
There’s no strict interval, but they’re commonly replaced when shocks or struts are renewed—often between 80,000 and 150,000 km depending on use. Inspect them at each major service, heavy loads, towing, rough roads, or lowered springs can accelerate wear, making earlier replacement a smart move.

Are shorter bump-stops needed if the car is lowered?
Often, yes. Lowered springs reduce available travel. A performance bump-stop with the right length and progressive rate helps avoid harsh bottoming while maintaining support. Match the stop to the spring and damper combo rather than deleting it—going without can damage components and upset handling.