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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
FMF SST vs Fatty pipe
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[QUOTE="hot125mod, post: 1180841, member: 74850"] The sst has a rapid diffuser in the main convergence cone and it causes the crown of the piston to heat up more rapidly because of the returning sonic waves to the exhaust port. That is where the power comes from along with the larger volume too. If you look at the middle of the SST it has a few steps in it that create the rapid diffuser. I hope that helps you some. Be careful with the timing espically on a yz 125 they have a pretty aggressive ignition map that is preset from the factory. putting the sst on can sometimes make the pre- ignition worse. :cool: [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
FMF SST vs Fatty pipe
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