2026 Duotone Foiling & Electric Foil Assist Set D/LAB
Shipping
Your gear is almost on the way!
Delivery times depend on the item and shipping method you choose. You'll find the estimated delivery time on the product page, with available shipping options and prices shown at checkout.
Once your order ships, we'll email you a tracking link so you can obsessively refresh it every five minutes. We don't judge. 👀
Can't wait? Choose Express shipping for an additional fee when available.
Around Vilnius? You can also pick up your order for free at our store, Rinktinės g. 55. We'll let you know when it's ready for pickup. Come say hi! 🤙
Returns
Wrong size? Wrong colour? Just not your vibe? It happens!
You have 14 days from receiving an online order to withdraw from your purchase, subject to applicable legal exceptions.
Feel free to inspect and try on your gear as much as necessary to check its fit and features. Just save the full test ride for later. 😉
For all the details, including return conditions, exceptions, costs and instructions, check out our Return Policy.
PRONE SURF / DOWNWIND
Duotone FOIL ASSIST SET D/LAB 2026
Item-no. 40260-4003 · Sizes: S-M, L-XXL · Colors: C99 Random
The Foil Assist D/LAB mast is the lightest, stiffest, and lowest-drag mast in the Foil Assist range, delivering the highest level of performance. It’s ideal for prone foiling in small to medium waves and for connecting bumps on downwinders.
The Foil Assist Set D/LAB includes the following items:
Read moreShow less
eMast D/LAB Set
Built from lightweight carbon and measuring 84 cm, the eMast D/LAB is the lightest and most advanced model in the Foil Assist lineup. Designed for unparalleled performance and control, the D/LAB emast has a slim, low-drag profile that ensures playful and precise turning, exceptional rigidity, and maximum speeds.
The motor pod is seamlessly molded into the mast profile, positioned 17 cm below the top plate, minimizing drag even during touchdowns. It features a two-blade folding propeller that reduces drag for effortless glide on the wave. Thanks to the integrated gear system, the propeller unfolds instantly, providing a smooth transition as you kick out of the wave and power back out.
The eMast mounts to your board and fuselage just like a conventional foil mast and is compatible with most brands' foilboards.
Tip: For optimal battery performance, pair the eMast with a front wing of at least 900 cm² and a board with a minimum volume of 35 L.
Note: The eMast D/LAB features a 3BS connection and is compatible with Duotone and Armstrong foils when used with our specially designed fuselage.
eHarness Set
The Foil Assist is powered by two compact batteries housed in a waterproof box mounted on a lightweight eHarness (approx. 3.76 kg). This keeps your board free from extra weight and drag. With the batteries placed on your hips, the natural, fluid feel of foiling is preserved while still giving you full freedom of movement. The eHarness is buoyant and easy to remove. A cable runs neatly along the shorter board leash and connects the batteries to the eMast. The receiver integrated into the battery box ensures a stable and reliable connection between the remote and the motor throughout your entire session.
eRemote Watch Ring Set
The Foil Assist Remote - a waterproof smartwatch-style controller with a finger ring - keeps your hands free, making it easier to push up on the board, paddle, duck dive, carve or handle a wing. Activate the motor with a double-click on the + button, and control the speed by pressing and holding either the + or - button.
Battery Charger Set
The charger can fully charge both batteries in under one hour and also includes a discharge function that helps maintain long-term battery health.
Airtravel-friendly Battery Set
Depending on your skill level, weight, setup and the conditions, the Foil Assist batteries provide 25 to 40 minutes of runtime per charge.
Note: Find out more details about each product by clicking on the related products below.
Tech Features
Low drag through seamless integration
The fully integrated motor pod, fixed at 17 cm below the top plate, and internally routed cables optimize glide and maneuverability, while allowing for easy assembly.
Extremely low drag
The slim and extremely low drag profile ensures maximum performance for the intended foiling discipline. The super slim base plate design minimizes drag while pumping up on the foil, landing and touching down significantly.
Turning behavior
The riding characteristics of the eMast D/LAB same as the Mast Slim 2.0 D/LAB are extremely playful. The High Modulus Carbon fiber enables precise turning.
Different boost options
Customize your ride with different propellers — plastic or aluminum — to dial in your perfect setup. Choose between powerful assistance that enables you to ride smaller foils and perform sharper turns, or go for a smoother boost for easy takeoffs and foiling.
Modular Design
Every component of the Foil Assist system is cross-compatible with the other eMast options, making it easy to expand your setup. The Foil Assist Mast D/LAB can be mounted to any brand’s foilboard with standard US foil tracks.
Folding propeller for low drag
The two-blade folding propeller reduces drag, allowing for effortless gliding on the wave. Thanks to its integrated gear system, the propeller unfolds instantly, providing a smooth transition as you kick out of the wave and power back out.
Reliable signal transmission
The wireless connection between the remote and the Foil Assist system is very stable, as the receiver is integrated into the lid of the battery box. This design prevents the connection from being interrupted by water.
Sizes & Specs
Sizes & Specs
| Lenght (cm) | Chord (mm) | Thickness (Thinnest Point In mm) | Weight (kg / Tolerance: +/- 5% Possible) | Screws 3bs | Rec. Torque | Construction | Disciplines | Conditions | Character | Compatibility Fuselages |
|---|---|---|---|---|---|---|---|---|---|---|
| 84 | 110 | 14.5 | 3 | 3x M8X50 TX45 | 15NM M8 | HM Prepreg Carbon | Assisted Prone, Downwind, Wake, Wing Foil | Small to big size surf, DW conditions | Strong, easy, maneuverable, direct response | D/LAB Wings + Tail / Aero AL 3BS / Fanatic & Duotone Carbon |
Size Chart
| Size | Waist |
|---|---|
| S - M | 71 - 89 cm |
| L - XXL | 89 - 114 cm |
