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Message: [QUOTE="adam728, post: 1163374, member: 55463"] MUCH of the noise on a 2 stroke comes from the airbox and the expansion chamber. At least, that is what you hear when riding the bike. I put a FMF Q on my 125 and was disapointed, it really didn't seem any quieter when riding it. I then made a baffle for the airbox and did some stratigic foam packing. Sounded a bit quieter, but still seemed loud. Turns out I was the quietest bike of the weekend at a local race when the meter came out! So riding a bike with a dB snorkel may not seem much quieter, but it really does reduce sound level considerably, and keeps the sound from carrying. [/QUOTE]