Interesting..... Thanks for the link.
He does mention gear change, but only specifies sprockets. It's been so long, i don't remember what the stock yerf sprocket tooth count is. I know 31 on the axle is normal.
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My Yerban assault vehicle: 2.2mm stroker crank, 62mm Nikasil cyl, Taida large vavle head, American made valve springs, ported intake manifold, TM 28mm carb, stock CDI, Bando coil, TK exhaust, stock CVT except for the 14g sliders, 13/40 internal gears, 16T drive, 31T axle sprocket, 22" rear tires, and ONE BIG POTATO CANNON mounted on top..........
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