Stingray Hydrofoils XR4 SR-XR4-1 Hydrofoil Boat Stabilizer, 40-300 HP, Black

The Stingray Hydrofoils XR4 (SR-XR4-1) is a hydrofoil boat stabilizer engineered to improve lift and holeshot on outboard and outdrive engines from 40 to 300 HP. Mounted directly to the cavitation plate, the XR4 helps boats get on plane quicker and stay on plane at lower speeds, which reduces engine strain and improves fuel economy. Its design reduces or eliminates chinewalking, porpoising, cavitation, and ventilation, giving the boat a more stable, comfortable ride while also increasing driver visibility at lower speeds by getting the bow down sooner.

The XR4 is built with downturned wings that pack water tightly around the propeller, making it a strong fit for boats that struggle with cavitation, including pontoon and tritoon boats. Boats pulling tubers, skiers, or wakeboarders benefit from a quicker pull-up and a smoother wake, while heavy runabouts and center console boats gain the maximum lift the XR4 is designed to deliver. The unit is finished in black and features a next-generation graphics package styled to complement modern outboard engines.

Installation uses a 2-bolt, 2-drill method: the hydrofoil slides onto the cavitation plate, two holes are drilled through the existing guide holes, and the included stainless bolts, washers, and nylon lock nuts secure it in place. Stingray backs the XR4 with a 1 year warranty.

Specifications

• Brand: Stingray Hydrofoils
• Manufacturer Part Number: SR-XR4-1
• HP Range: 40-300 HP
• Lift Level: 3-Maximum
• Installation Type: 2-Drill
• Color: Black
• Material: Metal
• Mounting Type: Transom Mount
• Weight: 6 pounds
• Dimensions: 24 inches (Depth) x 5 inches (Width) x 22.25 inches (Height)
• Recommended Uses: Water Sports (Skiing, Wakeboarding, Tubing), Fishing, Cruising, Heavy Runabouts, Ocean-going Center-consoles
• Warranty: 1 Year Warranty

Frequently Asked Questions

What HP range is the Stingray XR4 hydrofoil designed for? The Stingray XR4 (SR-XR4-1) is designed for outboard and outdrive engines in the 40-300 HP range, covering everything from heavy runabouts to ocean-going center consoles.

How is the XR4 hydrofoil installed? Installation uses a 2-bolt, 2-drill method: the SR-XR4-1 slides onto the cavitation plate with the graphics facing up, two holes are drilled using the existing guide holes, and the included stainless bolts, washers, and nylon lock nuts secure it from underneath.

What comes in the box with the XR4 hydrofoil? The Stingray XR4 (SR-XR4-1) ships with the pre-assembled hydrofoil unit along with two stainless bolts, two stainless washers, and two nylon hex nuts, which is all the hardware needed for installation.

What color is the Stingray XR4 hydrofoil? The SR-XR4-1 is finished in black with a next-generation graphics package designed to match the styling of modern outboard engines.

What material is the Stingray XR4 hydrofoil made from? The Stingray XR4 (SR-XR4-1) is constructed from metal for a durable, heavy-duty hydrofoil that holds up to sustained use on the water.

Will the XR4 hydrofoil help with cavitation on a pontoon boat? Yes, the downturned wings on the SR-XR4-1 pack water tightly around the propeller, which makes it a strong fit for pontoon and tritoon boats that commonly experience cavitation issues.

Does the Stingray XR4 improve fuel economy? By getting boats on plane quicker and keeping them on plane at lower speeds, the SR-XR4-1 reduces engine strain, which leads to significant fuel savings.

How does the XR4 differ from the Stingray Junior hydrofoil? The XR4 (SR-XR4-1) is built for 40-300 HP engines using a 2-drill installation, while the Stingray Junior is sized for smaller 9.9-40 HP engines on inflatables, tenders, and jon boats and can be trimmed narrower to fit smaller cavitation plates.

How does the XR4 compare to the Stingray Starfire and Stinger models? The SR-XR4-1 uses a 2-drill installation for 40-300 HP engines, the Stingray Starfire offers a no-drill or optional-drill installation across the same 40-300 HP range, and the Stingray Stinger covers a wider 4-300 HP range with drill installation required under 40 HP.

Does the XR4 hydrofoil reduce chinewalking and porpoising? Yes, reducing or eliminating chinewalking, porpoising, cavitation, and ventilation is a core function of the Stingray XR4 (SR-XR4-1) design.

Is the Stingray XR4 hydrofoil a genuine Stingray product? The SR-XR4-1 is the genuine Stingray Hydrofoils XR4, identified by its manufacturer part number and backed by a 1 year warranty.

What are the dimensions of the Stingray XR4 hydrofoil? The Stingray XR4 (SR-XR4-1) measures 24 inches in depth, 5 inches in width, and 22.25 inches in height.