Parts for your 2017 Mitsubishi Asx-Bump stops

2017 Mitsubishi ASX bump-stops

Technical sources confirm the 2017 Mitsubishi ASX is fitted with bump-stops (also called jounce bumpers). The Mitsubishi Motors service manual for the RVR/ASX/Outlander Sport platform shows a bump stopper on the front MacPherson strut rod and rear axle/body-mounted bumpers for the back end. The Mitsubishi ASA electronic parts catalogue likewise lists front strut bumpers and rear suspension bumpers for 2017 ASX variants, and major damper suppliers’ catalogues (e.g., KYB, Monroe) list jounce bumper/boot kits for this model year. So, bump-stops are relevant service items on this vehicle.

On the 2017 ASX, bump-stops act as progressive cushions at full suspension compression. They protect the strut internals, mounts, spring seats and chassis from harsh bottoming, help keep the tyres in contact with the road over big hits, and reduce noise and vibration. Up front, the bump-stop sits on the strut rod inside the dust boot. At the rear, the ASX uses body or axle-mounted bumpers depending on variant, doing the same job when the suspension reaches the end of its travel.

For servicing, bump-stops deserve a look any time the wheels, springs or shocks are off, or at around 40,000–60,000 km intervals. Tell-tales that the bump-stops are past it include perished or crumbling foam, splits, oil soak from a leaking damper, a heavy “thud” over speed humps, or the vehicle feeling harsh then oddly floaty after big compressions. If one side’s gone, it’s best practice to replace in pairs across the axle to keep handling even.

Replacement is straightforward when shocks/struts are already being changed, because the front bump-stop lives on the damper rod under the boot. Rear fitment varies by layout but is typically unbolt-and-replace. Using OE-style microcellular foam or reputable polyurethane options keeps the progressive rate correct. After front strut work, an alignment check is wise to protect tyres and steering feel. A quick clean of the dust boots and a check of mounts and spring seats at the same time helps the ASX stay quiet and composed on rough Kiwi and Aussie roads.

• Inspect during shock/strut service or every 40–60k km.
• Replace if cracked, compressed, oil-soaked or missing.
• Do both sides on the same axle for consistent behaviour.

Popular questions about 2017 Mitsubishi ASX bump-stops

Do worn bump-stops damage other suspension parts on a 2017 ASX?

Yes. Once the bump-stop degrades, the suspension can bottom out metal-to-metal. That can bruise strut mounts, kink damper rods, and stress springs and control arm bushes. Drivers may notice clunks over sharp bumps and accelerated tyre wear if bottoming becomes frequent.

Can stiffer aftermarket bump-stops improve how the ASX handles with a load?

They can, within reason. A quality progressive bump-stop can add support near full compression, which helps when carrying passengers or gear. Go too firm, though, and the ride can feel abrupt over potholes. Matching the bump-stop to the spring and damper is important.

Is it okay to replace the front bump-stops without new struts?

It’s possible, but the strut has to come apart to access the stop and boot. Many workshops recommend doing both while it’s open, especially if the dampers are aged, to save on duplicated labour and ensure the ride and control are restored in one hit.