engine rebuild

So you're buying a used sport quad and the seller doesn't have much information about the engine. Is it stock? Oversized displacement? Has it been ported? Does it have a high-compression piston?
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Vertex Complete Engine Rebuild Kits Save Time and Money
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By Allen Knowles  and staff of Dirt Wheels FOUR-STROKE TEAR- DOWN TIPS When performance quads were two-strokes without power valves, rebuilding an engine was relatively cheap, even with labor included. Modern two-strokes with…
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