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13 Spline 11 X 20 Cleaver Outboard Racing Propeller US $325.00 |
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counter rotating cleaver racing propeller for v6 omc US $125.00 |
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13 Spline Cleaver for Yamaha Outboard Racing Propeller US $450.00 |
Ventilation occurs when air or exhaust gasses are pulled into the propeller blades causing high RPMs and loss of speed. Possible causes are an over trimmed engine, a motor that is mounted to high on the transom or very tight cornering.