Davis Instruments Whale Tail XL Aluminum Hydrofoil Stabilizer for I/O and Outboard Motors

The Davis Instruments Whale Tail XL is an aluminum stabilizer fin designed to improve the performance of any inboard/outboard or outboard-powered boat. It extends out behind the propeller, positioning itself to capture prop wash energy that is normally lost as the boat runs. The Whale Tail XL converts that energy into lift, giving the boat a more immediate response when the throttle is applied.

Once installed, the Whale Tail XL works to reduce porpoising and cavitation, smooth out the ride in rough water, and stabilize bow-light boats for improved safety and visibility. It flattens the wake behind the boat, which is useful for waterskiing, and helps create positive, skid-free turns. Boaters can expect increased top speed and improved fuel economy in most applications as a result of the added lift and stability.

The Whale Tail XL is built from marine-grade aluminum with a durable anodized finish to resist corrosion in both freshwater and saltwater use. It mounts to the anti-cavitation plate of the motor and installs in about 15 minutes using the included stainless steel mounting hardware, making it a straightforward upgrade for any inboard/outboard or outboard motor.

Specifications

• Brand: Davis Instruments
• Manufacturer Part Number: 448
• Product Name: Whale Tail XL
• Material: Aluminum
• Finish: Anodized
• Color: Silver
• Item Dimensions: 15.5 x 13.5 x 1.25 inches
• Weight: 3 pounds
• Mounting Hardware: Stainless steel, included
• Installation Time: Approximately 15 minutes
• Water Use: Freshwater and saltwater
• UPC: 011698006397
• GTIN: 00011698006397

Frequently Asked Questions

What does the Whale Tail XL do? The Davis Instruments Whale Tail XL is an aluminum stabilizer fin that extends out behind the propeller to capture prop wash energy that would otherwise be lost, converting it into lift for a more immediate response when the throttle is applied.

Will the Whale Tail XL fit my boat? Yes, the Whale Tail XL is designed to improve performance on any boat powered by an inboard/outboard (I/O) or outboard motor.

Does the Whale Tail XL work in saltwater? Yes, the Whale Tail XL can be used year-round in both freshwater and saltwater.

How long does installation take? Installing the Whale Tail XL takes about 15 minutes, and stainless steel mounting hardware is included.

What is the Whale Tail XL made of? It is built from marine-grade aluminum with a durable anodized finish for corrosion resistance.

What size is the Whale Tail XL? The Whale Tail XL measures 15.5 x 13.5 x 1.25 inches and weighs 3 pounds.

Does the Whale Tail XL reduce porpoising and cavitation? Yes, one of the main benefits of the Whale Tail XL is reducing porpoising and cavitation while smoothing out the ride in rough water.

Can the Whale Tail XL improve fuel economy? Most applications see increased top speed and improved fuel savings after installing the Whale Tail XL, since the fin turns wasted prop wash energy into usable lift.

Is the Whale Tail XL good for waterskiing? Yes, the Whale Tail XL flattens the wake behind the boat and helps create positive, skid-free turns, which makes it well suited to waterskiing.

Where does the Whale Tail XL mount? The Whale Tail XL mounts on the anti-cavitation plate of the motor, positioned behind the propeller to capture prop wash energy.

Does the Whale Tail XL come with mounting hardware? Yes, stainless steel mounting hardware is included with the Whale Tail XL.

Will the Whale Tail XL help a bow-light boat? Yes, the Whale Tail XL stabilizes bow-light boats, improving both ride quality and visibility.