Parts for your 2017 Mazda Cx-5-Bump stops

2017 Mazda CX-5 bump-stops: what they do and when to replace them

Yes, the 2017 Mazda CX-5 is fitted with bump-stops (also called jounce bumpers). Mazda’s Workshop Manual for the KF-series CX-5 lists a bump stopper on the front MacPherson struts and the rear shock absorbers, and Mazda’s Electronic Parts Catalogue (EPC) shows these parts as serviceable items. Aftermarket technical catalogues from KYB and Monroe for the 2017 CX-5 likewise include jounce bumpers in strut/shock service kits. So they’re definitely relevant on this model.

On the CX-5, the bump-stop is a dense foam or urethane buffer that comes into play right at the end of suspension travel. Its main job is to prevent the strut or shock from bottoming out, protecting internal seals and rods from impact damage. It also adds a progressive “cushion” to the last bit of travel, which helps keep ride comfort tidy over big hits and keeps the body under control when loaded up, towing, or on rough roads.

Because bump-stops live inside the wheel well and move constantly with the suspension, they age over time. Heat, grime and suspension oil can make them crack, crumble or go mushy. They’re often paired with a dust boot, if the boot tears, the bump-stop usually follows not long after. During any shock or strut job on a 2017 CX-5, it’s smart practice to inspect and, if needed, replace the bump-stops and boots together.

For regular servicing, a quick visual check is worth doing around 60,000–80,000 km, and replacement commonly aligns with new shocks/struts somewhere between 80,000–120,000 km, depending on use. Vehicles that see corrugations, heavy towing or frequent full loads should have them inspected sooner. Use OE-quality components so the progressive rate is correct for the Mazda’s suspension tuning.

Tell-tale signs the bump-stops need attention include a harsh “thwack” on big bumps, the car feeling like it’s hitting a hard stop, or visible cracking/crumbs on the stopper or a torn dust boot. If the CX-5 is riding the bump-stops frequently, it might also point to tired springs or overloaded conditions.

Replacement is straightforward for a trained tech but does involve strut/shock removal. That means new top-nut torque settings must be followed from the Mazda manual, and a wheel alignment is recommended after front strut work. Avoid lubricating the bump-stop, just ensure the boot is seated correctly and everything is clean before reassembly.

• Protects struts/shocks from bottoming damage
• Adds progressive support at full compression
• Reduces noise and harshness over big bumps
• Best replaced with the dust boot during suspension service

Popular questions about 2017 Mazda CX-5 bump-stops

Do all 2017 Mazda CX-5s have bump-stops?
Yes. Mazda’s KF-series Workshop Manual (Front and Rear Suspension sections) and the Mazda EPC list bump stoppers on the front struts and rear shocks. Major aftermarket catalogues for the 2017 CX-5 also supply jounce bumpers and boot kits for both ends.

How often should bump-stops be replaced on a 2017 CX-5?
There’s no strict interval, but they should be inspected at each suspension service and generally replaced with shocks/struts. Many owners end up changing them somewhere in the 80,000–120,000 km window, earlier if the vehicle tows, carries loads, or drives on rough roads.

Is it safe to drive with damaged bump-stops?
It’s not ideal. A perished or missing bump-stop can let the strut or shock bottom out, risking internal damage and a nasty, jarring ride. If they’re cracked, crumbling or oil-soaked, plan a replacement soon—preferably with fresh dust boots as a set.