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Sportster Head Changes Revperf Smooths Out Runners Rough Surface
Sportster Head Changes - Build-Off - Greg's Bike
RevPerf smooths out the runner's rough surface to allow for a higher velocity air/fuel charge than a stock sand-cast head. All the work is done by hand; in this case it was performed by Dusty Werner. View Related Article
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Sportster Head Changes Revperf Smooths Out Runners Rough Surface Sportster Head Changes Stock Exhaust Port Sportster Head Changes Exhaust Runner Contoured Sportster Head Changes Stock Valve Springs Sportster Head Changes Beehive Springs
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