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Posted by: thomez
Better answers if you ask this question at the Yamaha forum. Good luck!
Posted by: Breezewood
Does anyone know how the HMF Full System Exhaust is for a Grizzly 660? My elevation is 2100 feet, how should my bike be jetted with this pipe? I'm also planning on adding a K&N filter, NGK plug, & 27" Dirt Devils. Thanks for the help!
