After installing the Yoshimura RS4 exhaust and Vortex ECU on my CRF450l I've been enjoying the power but the extra noise of the RS4 was wearing on me a little. I wanted it quieter than stock but the sound I was getting was more than I wanted. After some experimenting I came up with a FREE way to quiet the exhaust down by 50% and still have tons of power.

#crf450l #yoshimura #RS4

Yoshimura Exhaust
https://amzn.to/3aVsGCM

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