Stock pipe

Does anyone know the decibel level for a stock WR426?

With the cork in I think it's around 85-88 Db. Uncorked it's around 100-101.

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Chris

99WR400F

I tested mine with a meter. Using the SAE procedure (20" from outlet at a 45 degree angle, half the rated RPM)the stock pipe was 96db. With the insert removed it was 109db, which is WAY TOO LOUD for trail riding if we want to continue.

At idle the stock was 81db, insert out was 100db.

Carl

Thanks, this helps out a lot.

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