Stingray XRIII 500 Hydrofoil Boat StabilizerThe StingRay XRIII has been replaced by the StingRay XR4. [Click Here] to shop now.The StingRay XRIII Hydrofoil was designed to utilize the torque tab or sacrificial anode to secure the hydrofoil to the engine without the need of drilling any holes. The StingRay XRIII provides the greatest lift of any hydrofoil in the industry and is ideal for boaters pulling wakeboarders, tubers, and skiers. The StingRay XRIII is constructed using SpeedXP, a unique material that creates a dynamic reduction in hydrodynamic drag and greatly improves performance. The down-curving wings pack water tightly around the cavitation plate, making it an ideal hydrofoil for pontoons that like to carve out turns without throttling down. The StingRay XRIII also reduces chinewalking-its wings keep the boat stable, eliminating dangerous side to side rocking. This Hydrofoil helps improve fuel efficiency by utilizing the prop-wash that is normally thrown above the waterline and converting it into usable thrust. This feature is why the XRIII has the fastest hole shot in the industry.The StingRay XRIII's in-mold graphics decorate the entire surface of the hydrofoil with vibrant red, silver, and carbon fiber patterns. Benefits of installing the StingRay XRIII include increased performance, monetary savings, and a safer ride. With its no-drill design, the XRIII is quick and easy to install. Installation hardware is includedFeatures: Gets boats on plane quicker; Keeps boats on plane at lower speeds; Improves holeshots; Maximizes stabilization; Promotes safety by increasing visibility at lower speeds; Reduces chinewalking, porpoising, cavitation, and ventilation; Quick and easy no-drill installation; 1 Year warranty; Specifications: HP Range: 40-300 HP; Left Level: Maximum; Color: Black; DOES NOT FIT VOVLO - PENTA OUTDRIVESHow to Install a StingRay XRIII Hydrofoil:WARNING: WITH ALL ENGINE INSTALLATIONS, ENSURE BOAT ENGINE IS OFF, KILL SWITCH IS DISENGAGED, AND GEAR SHIFT IS IN NEUTRAL POSITION. Make sure all installation hardware is included: two (2) bolts, two (2) self-locking nuts, and two (2) speed caps.; Remove the torque tab from the underneath the cavitation plate.; Slide the StingRay XRIII onto the cavitation plate as far forward as possible.; Reattach the torque tab with the StingRay XRIII still in place so that the torque tab clamps the hydrofoil in place.; If the hydrofoil can be moved from side to side on the cavitation plate, insert the two (2) bolts from the bottom up through the slots in the front of the hydrofoil. There is no need to drill through the cavitation plate! These bolts are only used to eliminate the side to side play of the installed hydrofoil.; Use the two (2) self-locking nuts to attach the bolts. The white side of the nuts should be facing upwards.; Use a Phillips screwdriver to tighten the bolts. After bolts are tightened, place the two (2) speed caps into the two slots to cover up the attached nuts and bolts. In a matter of minutes you're ready to enjoy unmatched performance!; Notice:(1) This product should make an immediate performance improvement in your boat/motora |if for ANY REASON it does not, then remove this product and call (913) 451-1090 for assistance. (2) Any surface "flow marks" around holes that appear to be cracks are a normal part of the molding process and do not affect the part strength or performance. Click to Download Stingray XRIII Hydrofoil Installation Instructions