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engine rebuild

FOUR-STROKE TEAR- DOWN TIPS

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 power valves are definitely more expensive to work on, but those are not available for quads unless you are willing to build your […]