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Yoshimura SOUND INSERT KIT RS-12 Muffler, 1.375" (INS-32-K), image 1

Yoshimura

Yoshimura SOUND INSERT KIT RS-12 Muffler, 1.375" (INS-32-K)

Exhaust AccessoriesSKU YO-INS-32-K

Cheapest we found

$79.95

at XPERT Moto Gear

$79.95 lowest$84.99 highest

5 recent in-stock prices · spread $5.04 (6%)

Based only on in-stock prices checked in the last 30 days. 5 stores checked; dates for every store are shown below.

Recorded store prices

Prices we recorded when we last checked each store for this exact variant.

XPERT Moto Gear$79.95CheapestIn stockSuperbike Supply$80.90In stock
2 stores at this price$84.95
Highside ShopIn stockmay be out of dateRiders MarketIn stock
MotoHeaven$84.99In stock

Product details

The Yoshimura INS-32-K is a replacement low-volume sound insert kit for RS-12 mufflers, using a 1.375" insert. It fits into the muffler outlet to bring the exhaust note down when you need to meet a stricter noise limit.

It suits riders whose club, track or practice venue enforces a sound cap, and anyone who wants a quieter option they can fit or remove between rides. The amount of decibel reduction varies with the machine and application, so check your result against the limit that applies to you.

Note: this insert is not spark arrested, and Yoshimura designed and tested it around a factory-standard motorcycle for the U.S. market — fitment and performance may differ on bikes with other aftermarket or OE accessories fitted.

Price history

Recorded changes for this exact variant.

Step chart of dated store-price observations. Solid lines show confirmed crawl coverage, dashed lines show overdue missed-check spans, and every line stops at the last confirmed price.

  1. 1XPERT Moto Gear4 points · last checked 23 Aug 2026
  2. 2Superbike Supply3 points · last checked 21 Aug 2026
  3. 3Highside Shop1 point · last checked 8 Aug 2026
  4. 4Riders Market1 point · last checked 20 Aug 2026
  5. 5MotoHeaven3 points · last checked 23 Aug 2026

Solid steps show periods confirmed by the store’s change-only price history and completed crawl record: if the price had changed at a check, another point would appear. Dashed steps show overdue periods with no completed crawl confirmation. Every line stops at that listing’s last confirmed check and is never extended to today. Prices are not live and may have changed since the last point shown.

How we collect and compare prices
Cheapest we found: $79.95 · XPERT Moto GearJump to comparison