Performance Enhancing Aluminum HydroFoil This product is designed to help with several common issues. Some benefits include: Lower on plane speed Less blowing out Less prop cavitation Ability to run prop higher Each hydrofoil comes with the needed stainless steel hardware There are 2 styles that are available. The difference is strictly a personal preference in appearance! The most common style has cutouts. The theory behind the cutouts in high performance applications is that they allow the propeller to spin higher RPM’s. Sizing: Small - 9.9-35 HP Medium - 40-60 HP Large - 60-90 HP or large gear case XL - ¼” thick designed for 90 HP and more Common motor suggested sizing: Small - 10-¼” and smaller propellers Yamaha 25, mercury 25, all true 25 and under HP Medium - 10-¼” to 11-¾” propeller Mercury 40-60 hp non CT (Command Thrust or Bigfoot) 2 stroke and 4 stroke Yamaha 40-60 4 stroke; 40, 50 2 stroke Tohatsu “mega”; 40-60 2 stroke and 4 stroke Suzuki DT25 Large - 11-¾ to 14-½” propellers, up to 90hp Any big gear case such as command thrust, or Bigfoot Yamaha 60-90 2 stroke; 70-90 4 stroke Tohatsu 90 2 & 4 stroke Most Evinrude, Johnson, OMC 40-90hp, “big gear case” Extra Large - same basic design as the large, just thicker, and a larger opening to slide around the foot. Designed for larger motors, with larger lower units, and more stress on the plate Pictures are for the reference of STYLE ONLY. Picture may not accurately depict the SIZE or FINISH you selected. This is ONLY to reference the STYLE chosen. NOTE: All powdercoated, and XL plates are custom, and made to order. Please allow up to 7-10 business days for shipment.