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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Mods. To Yzf 250 Silencer=5 Hp
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[QUOTE="TexKDX, post: 133336, member: 16276"] You're such a pessimist, Rich. There IS such a mod. You have just missed it. If you take the muffler apart and remove about 30% of the packing then re-assemblle, the bike will make .001 more HP in the RPM spread from 5,000 to 10,000 RPM. Add it all up, and that is 5 more HP. [/QUOTE]
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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
Mods. To Yzf 250 Silencer=5 Hp
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