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Best sport quad mods

THUMPER TALK: The 25 best tips for your 4-stroke

Thumper Talk As the riding season winds down, it may be a good time to get your four-stroke ATV running up to its full po­tential. To help you out, we talked with some of the top four-stroke tun­ers in the country and asked them to lay out their best performance tips. From the Northwest, we contacted vet­eran wrench, Pete Fisher, from Pow­roll Performance up near Bend, Oregon. For the East Coast, we got shop owner Micky Dunlop from Four-Stroke Tech (  ) to dislodge his Thumper Talk…