Stingray XR4 Hydrofoil Boat Stabilizer

Stingray XR4 Hydrofoil Boat Stabilizer

Improve your boat's lift and holeshot with the StingRay XR4 Hydrofoil. The XR4 is designed to provide maximum lift, blast boats out of the hole quicker than ever before, and keep boats on plane at lower speeds. The result? Increased safety and significant fuel savings. This hydrofoil reduces and eliminates porpoising, chinewalking, cavination, and ventilation, stabilizing the boat and providing a more comfortable ride.

Benefits for different styles of boats

For boats pulling tubers, skiers, or wakeboarders, the StingRay XR4 helps pull them up quicker and smooths out the wake for more enjoyable towing. It also helps increase driver visibility by getting the bow of the boat down sooner. Heavy runabouts and center console boats can benefit from the maximum lift provided by the XR4 Hydrofoil. The downturned wings also pack water tightly around the prop, making this an ideal solution for boats experiencing cavitation problems - a common issue found on pontoon and tritoon boats.

Next-gen styling and technology

The XR4 Hydrofoil is equipped with a next-gen graphics package that provides the most advanced graphics in the industry while complementing the styling found on new outboard engines. The 2-bolt installation method is the industry's most secure and easiest installation, giving you confidence and peace of mind on the water. The XR4 Hydrofoil is guaranteed to never come off your engine. Engineered with the very latest in hydrofoil technology, the StingRay XR4 provides top-notch performance enhancement, next-gen styling, and pays for itself in fuel savings.

Features:

• 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
• 1 Year warranty

Specifications:

• HP Range: 40-300 HP
• Left Level: 3-Maximum
• Installation Type: 2-Drill
• Color: Black

How to Install a StingRay XR4 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) nylon hex nuts, two (2) stainless bolts, (2) stainless washers
• Slide the StingRay XR4 Hydrofoil onto the cavitation plate as far forward as possible with the colored graphics side facing upwards.
• Using a drill and 1/4" bit, drill through the cavitation plate using the two holes on the top side of the hydrofoil as a guide. 
• make sure to keep the drill perpendicular to the cavitation plate while drilling.
• Place the stainless steel bolts through the holes on the top of the XR4 Hydrofoil and attach a flat washer and nylon nut to each bolt from the underneath side of the hydrofoil.
• Using a Philips Head screwdriver and a 7/16" socket and ratchet, secure the bolts by tightening the nylon lock hex nuts.
• BEFORE OPERATING, check the propeller clearance by slowly turning the propeller by hand to make sure there is no interference between the hydrofoil and propeller.

Notice:

(1)  This product should make an immediate performance improvement in your boat/motor…if for ANY REASON it does not, then remove this product and utilize the Customer Contact Form on StingRay's website (www.StingRayHydrofoil.com) 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.

Frequently Asked Questions

What does the StingRay XR4 Hydrofoil Boat Stabilizer do?

The StingRay XR4 Hydrofoil is designed to improve boat lift and holeshot performance, helping boats get on plane quicker and stay on plane at lower speeds. It also helps stabilize the boat by reducing porpoising, chinewalking, cavitation, and ventilation for a more comfortable ride.

What outboard motors is the StingRay XR4 Hydrofoil compatible with?

The StingRay XR4 Hydrofoil has a specified horsepower range of 40-300 HP. Before installation, verify that your outboard falls within this stated range and that the hydrofoil is appropriate for your specific boat and motor application.

How is the StingRay XR4 Hydrofoil installed?

The XR4 uses a 2-bolt installation method. It is positioned as far forward as possible on the cavitation plate, then two holes are drilled using a 1/4-inch bit and the hydrofoil as a guide. Stainless bolts, washers, and nylon hex nuts are used to secure it. A drill, Phillips head screwdriver, and 7/16-inch socket and ratchet are required.

What safety checks are required when installing the StingRay XR4 Hydrofoil?

Before installation, make sure the engine is off, the kill switch is disengaged, and the gear shift is in neutral. After installation, slowly turn the propeller by hand to verify there is no interference between the hydrofoil and propeller before operating the boat.

Can the StingRay XR4 Hydrofoil help boats used for tubing, skiing, or wakeboarding?

Yes. The XR4 is designed to help boats get on plane quicker and smooth out the wake when pulling tubers, skiers, or wakeboarders. It can also help increase driver visibility by getting the bow of the boat down sooner.

What is included with the StingRay XR4 Hydrofoil?

The installation hardware includes two nylon hex nuts, two stainless bolts, and two stainless washers. The hydrofoil is black and uses a 2-drill installation. The product also includes a 1-year warranty.

California Residents: WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov