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Old 12-18-2015, 05:26 AM
87octane 87octane is offline
Motorized Bicycle Newbie
Join Date: Dec 2015
Location: Campbell, Ca.
Posts: 14
Default Re: New in Los Gatos, Ca.

I think they make FMF megabomb expansion chambers for 4 cycle engines. Ktm has them on its 450 sx-f dirt bike. It gives more low end performance, and runs quieter. The little exhaust flange I made to angle out the pipe turns it into a 4 cycle expansion chamber.
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