[Preventative Maintenance] Prevent muffler drop-off while riding! Refresh worn-out “Yoshimura Muffler Springs” before they break

Recently, when I look at customers’ mufflers…
Hmm… There are quite a few things wrapped in silicone hose .

But why?
Semi-transparent? Am I the only one wondering?
I’ve also researched various silicone hoses and stocked up on the right size for this application.

Today’s Recommended Maintenance Item

Item: Yoshimura (YOSHIMURA) Genuine Muffler Spring

Signs of replacement: Spring is rusted, moves easily when touched by hand (tension is lost), vibration-damping rubber is falling apart.

Why replace it?:

  • Engine heat and vibration cause metal fatigue, leading to sudden breakage.
  • If it breaks, you risk exhaust leaks or, in the worst case, the silencer dropping off while riding—a serious accident.

Conclusion: It’s an inexpensive part at just a few hundred yen per piece. Preventative maintenance—replacing it “before” it breaks rather than “after”—is absolutely the right call!

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株式会社ヒロチー商事 楽天市場店
¥165 (2026/09/22 10:35時点 | 楽天市場調べ)
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Replace before it breaks. Just ¥150 per piece

Yoshimura Muffler Spring “118-000-1000”
It tends to go out of stock for long periods.
If you think you need it, order now!

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¥165 (2026/09/22 10:35時点 | 楽天市場調べ)
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Black silicone hose for a sleek look and vibration suppression

Ugh, Amazon?
That’s fine. I use whatever is readily available (*´ω`*)

uxcell Silicone Tube Rubber Tube Black Rubber Silicone 9x12mm

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For Yoshimura, I typically cut it to about 72mm.
If you want a 7/10 length, adjust as needed… go for it.

Looks pretty nice (*´ω`*) Subtle tuning

Before Golden Week, please replace both the spring and silicone hose set~

Of course, don’t forget silicone lube before insertion.
Smooth insertion! And it also has a slight rust-prevention effect.

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Preventative Maintenance: Refreshing Exhaust Springs Before They Snap.

Item: Yoshimura Genuine Muffler Springs (with anti-vibration rubber covers). Details: Exhaust springs are often overlooked, but they endure extreme heat and constant engine vibration. Over time, they stretch, rust, and suffer from metal fatigue. If they snap while riding, you risk exhaust leaks or even dropping your silencer on the road. Verdict: Don’t wait for them to break. Yoshimura’s genuine springs come with rubber covers that eliminate annoying resonance noise. Replacing these inexpensive parts is the best “cheap insurance” to keep your bike safe and sounding great!

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