Parts for your 2023 Mitsubishi Asx-Bump stops

2023 Mitsubishi ASX bump-stops

Yes, the 2023 Mitsubishi ASX uses bump-stops (also called jounce bumpers). Technical sources that identify them on this model include: Mitsubishi Motors Service Manual (GA2W/GA3W) Front and Rear Suspension sections, which show the jounce bumper as part of the front strut assembly and a rear axle/body-mounted bumper, the Mitsubishi ASA electronic parts catalogue listing front “shock absorber bumper” and rear “suspension bumper”, and mainstream parts catalogues from KYB and Monroe that supply ASX strut-boot kits with integrated bump-stops for 2010–2023 models.

On the ASX, bump-stops act like a final, progressive cushion when the suspension nears full compression—think big potholes, sharp speed humps, corrugated gravel, or a fully loaded boot. Up front they sit under the dust boot on the MacPherson struts, and at the rear they’re mounted near the torsion beam. They protect the dampers and mounts, keep the ride height and geometry in check under heavy hits, and cut down on nasty clunks that can travel into the cabin.

They don’t need regular replacement on a schedule, but they do like a quick look whenever the ASX is in for suspension work or a major service. Heat, age, oil from a weeping shock, or hard outback kilometres can make the foam or rubber go brittle, squash permanently, or crack. If a front strut boot is torn, chances are the bump-stop isn’t happy either. Many techs replace the bump-stop and boot as a kit when fitting new shocks—it’s cheap insurance and saves labour later.

Typical signs they need attention include:

• A harsh “bang” over big hits or when loaded up, instead of a muted thud
• Visible cracking, chunking or oil-soaked, mushy foam during inspection
• Repeated bottoming-out on roads the ASX used to handle fine

Replacement is straightforward. The front requires removing the strut and using a spring compressor to swap the boot and bump-stop—always follow manufacturer torque specs and fit quality parts. The rear bumper is usually a simple unbolt/push-fit job, but support the beam safely. Do them in pairs (left and right) and, if a front strut has been out, book a wheel alignment to keep the tyres happy. For frequent touring, towing or rough rural roads across Australia and New Zealand, add a bump-stop and boot check to the service list every 20–30,000 km or before a big trip.

Popular questions

Do all 2023 ASX variants have bump-stops?
Yes. Across trims, the front MacPherson struts use an internal jounce bumper under the dust boot, and the rear torsion-beam setup has body-mounted bump-stops. Different part numbers may appear in catalogues, but the function and fitment are consistent across the range.

How often should bump-stops be replaced on a 2023 ASX?
There’s no fixed interval. Inspect them during major services or any time shocks, struts, or springs are off the car. Replace if they’re cracked, crumbling, oil-soaked, or if you’re fitting new dampers. Rough roads, heavy loads and hot climates can shorten their life.

Are upgrade bump-stops worth it for touring or a mild lift?
They can be. Higher-spec foam or polyurethane bump-stops can offer firmer, more progressive support near full compression, helping with load and big hits. They may add a touch of firmness at the limit, so choose a setup that matches your springs, ride height and how the ASX is used.