---
product_id: 1961774
title: "Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211)"
brand: "davis instruments"
price: "NT$3841"
currency: TWD
in_stock: true
reviews_count: 7
url: https://www.desertcart.tw/products/1961774-davis-instruments-doel-fin-outboard-outdrive-stabilizer-black-ss-sms
store_origin: TW
region: Taiwan
---

# Boosts planing speed by reducing bow rise Saves up to 30% fuel consumption 15-minute easy installation with included hardware Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211)

**Brand:** davis instruments
**Price:** NT$3841
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your boating game with the Doel-Fin hydrofoil – speed, savings, and style in one sleek fin!

## Quick Answers

- **What is this?** Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211) by davis instruments
- **How much does it cost?** NT$3841 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/1961774-davis-instruments-doel-fin-outboard-outdrive-stabilizer-black-ss-sms)

## Best For

- davis instruments enthusiasts

## Why This Product

- Trusted davis instruments brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** Simple 15-minute installation with all hardware included—get back on water fast
- • **Universal Compatibility:** Fits all newer outboard and stern drive motors (5HP+), except Volvo Penta
- • **Instant Performance Upgrade:** Experience faster out-of-the-hole acceleration for thrill seekers
- • **Fuel Efficiency Game-Changer:** Cut fuel costs by up to 30% on every trip
- • **Hydrofoil Engineering Precision:** Designed by an aeronautical engineer for optimized hydrodynamics

## Overview

The Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer is a high-strength plastic hydrofoil designed by an aeronautical engineer to improve boat performance by reducing bow rise and increasing fuel efficiency by up to 30%. Compatible with most modern outboard and stern drive motors over 5 horsepower (excluding Volvo Penta), it installs easily in just 15 minutes with included hardware, delivering faster acceleration and enhanced stability for a superior boating experience.

## Description

Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211)

## Features

- Maintain lower planning speeds
- Increases fuel efficiency and reduce bow rise
- Promotes fast out-of-the-hole times
- Designed by an aeronautical engineer, Doel Fin is a true hydrofoil
- Simple 15-minute installation, hardware included
- Doel-Fin fits all newer outboard and stern drive motors from 5 horsepower, except Volvo Penta outdrives
- Doel-Fin improves overall performance - even on boats with well designed hulls
- Save up to 30% on fuel consumption
- Faster out-of-the-hole for happier water skiers and wake boarders.
- Increase performance and safety; Sport type: Boating

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Davis Instruments |
| Item Weight | 0.17 Pounds |
| Color | black |
| Material | high-strength plastic |
| Engine Type | Outboard Motor |
| Operation Mode | automatic |
| Recommended Uses For Product | For Inflatable Boats |
| Mounting Type | lower unit mount |
| Fuel Type | Natural Gas |
| Manufacturer | Davis Instruments |
| UPC | 709618196869 772259101288 011698001859 012300703536 400019371199 611104329418 |
| Global Trade Identification Number | 00011698001859 |
| Item Package Dimensions L x W x H | 11.42 x 9.29 x 1.65 inches |
| Package Weight | 0.93 Kilograms |
| Item Dimensions  LxWxH | 14 x 16 x 11 inches |
| Brand Name | Davis Instruments |
| Warranty Description | Warranty |
| Model Name | Davis Doel-Fin Hydrofoil f/Outboards & Outdrives |
| Suggested Users | unisex-adult |
| Number of Items | 1 |
| Part Number | 440 |
| Included Components | Davis Doel-Fin Hydrofoil f/Outboards & Outdrives |
| Size | 4.5-inch Combi |
| Sport Type | Boating |

## Product Details

- **Brand:** Davis Instruments
- **Item Weight:** 0.17 Pounds
- **Color:** black
- **Material:** high-strength plastic
- **Engine Type:** Outboard Motor

## Images

![Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211) - Image 1](https://m.media-amazon.com/images/I/61MvwftSnEL.jpg)
![Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211) - Image 2](https://m.media-amazon.com/images/I/71aodGjOoyL.jpg)
![Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211) - Image 3](https://m.media-amazon.com/images/I/51uF06moNWL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for the value. Very easy to install.
*by B***. on August 20, 2020*

Easy installation. Very well worth the money. It does everything exactly what was supposed to do. It reduces the bow of the boat getting a faster response time to plane on top speed, does get a noticeable difference of greater gas consumption reduced to a fuel increase- leading to fewer gas trips. The biggest difference between having this versus not having it is how much more smoothly the ride is on top speed, with very little usage of the trim in addition to the planning.To install it takes less than an hour. Very easy to install yourself. Take it out of the box and place it where it should be, make sure measure twice to drill once. Drill the holes with the fins on it, as it has pre-drilled holes to guide it. Place the nuts and bolts on, tighten it snug, but not to over tighten it.Depends on the make and model lower unit to install it really doesn't take long to get it done. I had to remove the prop on my 140 HP I/O. Looks great and does an amazing job for my boat. Great for water tubers and skier's that appreciate it for a faster out of the hole experience.I highly recommend it. Worth every single penny, does pay for itself.

### ⭐⭐⭐⭐⭐ Works great on my 14' boat with a 15hp Mercury!
*by W***L on July 7, 2020*

Works amazingly well on my aluminum fishing boat! I noticed it immediately when I twisted the throttle. It planes at a much lower speed, allowing the boat to get out of the hole when loaded with people and gear. It also seems much more stable when passing over wakes. True 15 minute install on my 1999 Mercury 15hp outboard. Great product at a great price!

### ⭐⭐⭐⭐⭐ Easy to install, works well on Johnson 55 hp
*by R***K on May 11, 2021*

Easy to install and it did exactly what I wanted. I mounted in on an old 55 hp Johnson. My boat was plowing a bit before I could get up on plane. Once I installed this, it put an end to that problem. Additional benefit is that it makes for a smoother ride at high speed - like I am gliding on the water. I am sure it helps a tad with fuel economy as well since it lifts the boat so there is less drag.

## Frequently Bought Together

- Davis Instruments Doel-Fin Outboard/Outdrive Stabilizer - Black (SS-SMS-5001211)
- Seachoice ProFlo Universal Round Motor
- Attwood 7524A7 Snap-Handle Drain Plug,

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-01-24*