Duotone Foil Assist Aluminum Set
$5,699.00
More time on foil, less time struggling — the Foil Assist Set AL is a plug-and-play system built to take your sessions to the next level.
EMAST Alloy Set 2026
PRONE SURF / DOWNWIND
Take your foiling to the next level with the Foil Assist Set AL – a plug-and-play system that gives you the extra boost exactly when you need it.
OVERVIEW
eMast AL Set
Built from lightweight aluminum and measuring 84 cm, the eMast AL is incredibly stiff and provides a direct feel.
The motor pod is fully integrated into the mast and positioned slightly behind the leading edge, 17 cm below the top plate, to minimize 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 just like a conventional foil mast.
Note:Â A fuselage adapter is required to mount a fuselage onto the eMast. In addition to the Duotone adapter, we offer ten other options to help you combine the Foil Assist with your existing foil setup. The adapter is not included and must be purchased separately.
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.
The following items are included in the eMast Set AL:
- Foil Assist Mast including motor, bell, regular propeller blades, regular cable, and leash
- eHarness Set Assist eMast cover
- eRemote Watch Ring Set
- Battery Charger Set
- Airtravel-friendly Battery Set
- Motor bell & propeller cover
- Screw set and tools
- Cable fastener V
- Spare regular propeller blades
- Battery bag
SIZE SPECS
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.
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 AL can be mounted to any brand’s foilboard with standard US foil tracks. A fuselage adapter is required to attach the fuselage to the eMast. In addition to the Duotone adapter, we offer ten more options to help you combine the eMast with your existing foils.
STIFF MAST FOR DIRECT RESPONSE
The stiff aluminum mast features a rigid, surf-inspired profile that ensures precise control and instant responsiveness, minimizing drag for smoother and more efficient sessions.
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.
RELIABLE SIGNAL TRANSMISSION
The Bluetooth 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.
FOLDING PROPELLOR 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.
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