2K5511155 Volkswagen jounce bum

These things basically limit how much your suspension compresses. Think of it like this – when you hit a big bump, your strut or spring wants to keep going up, right? The bounce buffer is there to gently stop that movement, preventing the suspension from bottoming out. It absorbs the final bit of impact force. It doesn’t do all the work, your spring and strut do most of it, but it’s there for that last little bit of travel. It’s a simple little piece, but it plays a surprisingly important part. It sits up against the strut body, usually near the top, inside the spring coil. It’s designed to be a cushion, a last line of defense. It doesn’t really get involved in normal driving, just when you have bigger impacts. You won't feel it working directly most of the time, it’s there for those more severe hits. They are sometimes found on the lower portion of the suspension as well, acting as a similar cushion. Well, constantly bottoming out your suspension does a lot of damage over time. It can wear out your struts, springs, and other components a lot faster. The bounce buffer protects those more expensive parts, extending their life. You’ll notice if one goes bad usually because you start feeling harsher impacts when you hit bumps, or you might even hear a clunking sound. It’s a relatively inexpensive part to replace, and it can save you from bigger repair bills down the road. You can find them pretty easily online—Fixparts Online carries a good selection, and you can usually find one that fits your vehicle pretty quickly. It’s one of those things you don’t think about until it’s gone, but it’s a good preventative maintenance item. Highly rated and reliable: Bounce Buffer (MPN 2K5511155) includes a 12-month warranty!

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