STINGRAY HYDROFOILS Classic Senior 2 hydrofoil stabilizer for 40-300 hp, Black, single-piece 4-bolt lift wing

The STINGRAY HYDROFOILS Classic Senior 2 is a heavy-duty hydrofoil stabilizer that reduces porpoising and ventilation to get boats on plane faster and maintain stability at lower speeds.

The Classic Senior 2 is a single-piece, 4-bolt hydrofoil designed for outboard and outdrive engines rated from 40 to 300 horsepower. Molded in durable materials and finished with drag-reducing wing texture and subtle ghosted graphics, this foil improves acceleration, helps keep the bow down sooner, and minimizes common handling issues like chinewalking and cavitation. Installation is straightforward and secure, and the unit is manufactured in the USA.

How will this hydrofoil affect acceleration and getting on plane?

The Classic Senior 2 creates additional lift behind the motor, reducing the time and throttle needed to reach plane. Boats accelerate more efficiently, which shortens launch distances and improves driver sightlines because the bow responds sooner.

• Designed lift profile for quicker plane initiation
• Works across boat types and hull shapes within engine range
• Reduces engine strain during hole shots
• Often lowers throttle needs for similar speeds

Will it stabilize porpoising, chinewalking, or ventilation?

The foil is engineered to dampen oscillation and prevent airflow or water intake under the prop, addressing porpoising and ventilation while curbing chinewalking. It improves straight-line tracking and creates a smoother, more predictable ride at varying speeds.

• Hydrodynamic wing reduces cavitation and ventilation
• Lift distribution counters bow rise and pitch cycles
• Smoother planing keeps the hull engaged for better tracking
• Improves tow sports starts by stabilizing the platform

How difficult is installation and what hardware is used?

Installation uses a 4-bolt clamp system that slides onto the cavitation plate; it's a no-fuss, secure method trusted across the industry. The unit is shaped for a precise fit and requires drilling into the cavitation plate holes for a permanent mount.

• 4-bolt installation for mechanical security and longevity
• Slide-on design aligns quickly for accurate placement
• Requires drilling at marked locations for final fastening
• One-piece construction simplifies fit checks before final install

How does this impact top speed and fuel use?

The foil’s textured wing and streamlined profile reduce drag while allowing the boat to plane sooner, which can translate into better fuel efficiency during everyday cruising. Top-end performance is preserved thanks to the foil’s low-drag shaping.

• Drag-reducing surface texture for minimal top-end loss
• Earlier planing decreases fuel burned during acceleration
• Less throttle bounce and engine load during runs
• Contributes to better fuel economy in mixed-use conditions

Who is this for? The STINGRAY HYDROFOILS Classic Senior 2 suits owners of boats running 40–300 hp outboard or outdrive motors who want faster plane times, steadier handling, and fewer disruptions from common cavitation or porpoising problems. It’s ideal for recreational boaters who tow tubes or skiers, anglers wanting a more predictable ride, and anyone seeking a durable, USA-made stabilizer that installs reliably and reduces everyday operating costs.