Parts for your 2013 Subaru Legacy-Bump stops

2013 Subaru Legacy (Liberty) bump-stops: what they do and when to replace them

Yes, bump-stops are fitted to the 2013 Subaru Legacy (BM/BR, sold as Liberty in Australia). Technical sources list them as standard equipment: the Subaru Legacy/Outback 2010–2014 Service Manual identifies a bump stopper (jounce bumper) within both the front MacPherson strut assembly and the rear shock absorber assembly, and Subaru’s FAST electronic parts catalogue shows dedicated entries for “Bumper – Front Strut” and “Bumper – Rear Shock Absorber.” Ride-control references from OE-equivalent suppliers (e.g., KYB technical guides on jounce bumpers) further describe their function as a secondary spring to prevent bottoming.

On the 2013 Legacy/Liberty, the bump-stop is a dense foam or microcellular urethane piece that acts like a progressive, last-line spring. When the suspension compresses hard — say over a nasty pothole, a speed hump taken a touch quick, or a heavily loaded boot on a country road — the bump-stop cushions the final bit of travel. That saves the strut or shock from hammering its internals, helps protect the top mount, and keeps the alignment closer to spec under full compression. It also trims noise, vibration and harshness so the cabin doesn’t cop a thud every time the suspension bottoms out.

They don’t get much love because they’re hidden under the dust boot, but they’re absolutely a service item. Age, UV, oil contamination and general road grime can make bump-stops crack, crumble or collapse. Once they’re perished, the car can feel harsh on big hits, make a sharp clunk at full compression, or chew through struts and mounts faster than expected. Best practice is to inspect them whenever shocks/struts are replaced, or roughly every 40,000–60,000 km during a suspension check. If they’re split, squashed, oil-soaked or missing chunks, replace them.

• Always replace in axle pairs and fit new dust boots at the same time — many kits bundle both.
• Follow Subaru service manual procedures and torque specs, use a proper spring compressor for front struts.
• After front strut work, get a wheel alignment, rear shock replacement generally won’t shift alignment, but it’s wise to check.
• If the Legacy regularly carries heavy loads or tows, consider OE-quality bump-stops and ensure ride height is within spec.

Keeping the bump-stops healthy is cheap insurance for the rest of the suspension. It preserves ride quality, protects costly components, and keeps the Legacy/Liberty feeling planted on Aussie and Kiwi roads alike.

Popular questions about 2013 Subaru Legacy bump-stops

Do all 2013 Legacy/Liberty models have bump-stops?
They do. The factory service manual and Subaru parts catalogue list a bump stopper in the front strut and another on the rear shock across the BM/BR range. Whether it’s a 2.5i or a higher trim, the suspension relies on these jounce bumpers to control the last part of travel.

How can someone tell if the bump-stops need replacing?
Look for cracking, missing chunks, or a bump-stop that’s turned to powder when the dust boot is lifted. From the driver’s seat, signs include a sharp bang on big bumps, quicker-than-normal strut or mount wear, and a harsher ride when loaded up. If replacing shocks/struts, it’s smart to renew bump-stops at the same time.

Do bump-stops change ride height or stiffness?
Under normal driving, no. They only engage near the end of travel. They won’t raise the car or make it stiff in day-to-day use. However, fresh bump-stops can make full-compression events quieter and better controlled, which can feel like an improvement in stability over sharp hits.