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Sheet updated September 2026
The Foil Drive Assist MAX+ Base Kit is the Assist MAX+ foil assist unit sold without a battery or motor. You complete it with an FM+ battery and your choice of Foil Drive motor, or you can mount it on a mast with an integrated motor. The Assist MAX+ replaces the Assist MAX. It uses the Fusion's 43 V platform. This delivers more power, a tilt sensor, and improved Bluetooth, all within the compact, lightweight design that made the MAX so popular. Foil Drive offers this base kit for three scenarios: when you're buying a mast with an integrated motor, when you already have a compatible motor and need an additional unit, or when you want to build your kit piece by piece.
KEY INFORMATION
FOIL DRIVE ASSIST MAX+ BASE KIT - Foil assist unit without battery or motor
What we like
- The Fusion platform: The Assist MAX+ now runs on the Fusion's proven 43 V architecture. This translates to approximately 20% more power and range than the Assist MAX, according to Foil Drive.
- 35.5 kg of thrust: Foil Drive rates the High Power motor at 1,750 W continuous and 2,150 W in boost mode.
- Shared batteries: FM+ batteries fit directly into the MAX+ and, with the FM+ Battery Adaptor, into the Fusion.
- Motor of choice: Choose between the Retrofit High Power, Retrofit Standard, or an integrated motor mast from a partner brand.
- Tilt sensor and app: Enjoy improved Bluetooth connectivity and monitor your batteries with the Foil Drive app, available on Android and iOS.
- Delivered ready to assemble: The box includes a carry bag, V3 remote, 43 V charger, titanium screw set, and tools.
- IP68 waterproof: This unit is IP68 certified for protection against water and dust.
Use
Foil assist • Surf foil • Downwind • Wing foil • Wake
Available sizes
Color
Black
Included / Not included
✓ Included: Assist MAX+ unit in bag, V3 remote, 43 V 12 A charger, 4 M7 titanium screws, tools, and care kit
✗ Not included: FM+ battery, motor, mast, and board
DETAILED DESCRIPTION
The Assist MAX+ vs. the Assist MAX
Foil Drive introduces the Assist MAX+ as the direct replacement for the Assist MAX. It now runs on the Fusion's 43V platform. This delivers more power, a tilt sensor, and improved Bluetooth. Foil Drive reports approximately 20% more power and range compared to the Assist MAX, plus a battery that you can use deeper into its charge cycle. The core concept remains the same: a compact and lightweight foil assist. This assist is balanced and adds thrust without compromising the true ride feel of your foil. One important note: the 40V batteries from the Assist MAX are not compatible.
Why a base kit?
The base kit is the unit alone, without a battery or motor. It makes perfect sense in three situations. If you're buying a mast with an integrated motor, there's no need to pay for a second motor. If you already own a compatible Foil Drive motor and are outfitting a second board, this is your solution. Or, if you prefer to build your kit yourself, including the battery and motor, this is the way to go. The unit arrives in its bag with the V3 remote, the 43 V 12 A charger, four M7 titanium screws, and a tool and care parts kit.
What you need to add
For power, the FM+ 650 battery (648 Wh) fits directly into the unit. For propulsion, you have three compatible options: the Retrofit High Power Motor Kit (universal mini pod, three-blade propeller, 20 cm cable), the Integrated Mast High Power Motor for integrated Foil Drive aluminum or carbon masts, or the Retrofit Standard Motor Kit (universal pod, two-blade propeller, 30 cm cable). The V3 remote is included, and the V2 remains compatible.
Intended uses
Foil Drive describes this as the do-it-all unit. It means more waves per session in surf foil, motor assistance to return upwind for continuous downwind runs without a shuttle, easier starts in flat water, practicing pumping without numerous restarts, wake waves, and quick re-acceleration after a fall. It's designed for riders under 100 kg on short to medium boards, and advanced riders seeking weight savings without sacrificing power.
SIZE GUIDE
| Size | Configuration |
|---|---|
| One size | Unit only, FM+ battery and motor to be added |
VIDEO
TECHNICAL SPECIFICATIONS
| Specifications | |
|---|---|
| Type | Foil assist unit, base kit without battery or motor |
| System voltage | 43.2 V |
| Compatible batteries | FM+ range (FM+ 650, 648 Wh); Assist MAX 40 V batteries are not compatible |
| Compatible motors | Retrofit High Power Motor Kit, Integrated Mast High Power Motor, Retrofit Standard Motor Kit |
| Remotes | V3 supplied, V2 compatible |
| Maximum thrust | 35.5 kg |
| Power | 1,750 W continuous, 2,150 W boost |
| Minimum installed weight | Weighing in at 6.71 kg, this kit includes the battery, an integrated High Power motor, and a three-blade propeller. |
| Dimensions with battery | 540 x 125 x 55 mm |
| Watertightness | IP68 |
| Application | Foil Drive App, Android and iOS |
| Certifications | UN38.3, CE, FCC, WEEE, RoHS, PSE, ICES, IP68 |
| Recommended body type | Riders under 100 kg, short to medium boards |
FAQ - FOIL DRIVE ASSIST MAX+ BASE KIT
A battery from the FM+ range, currently the FM+ 650 with 648 Wh. It fits directly into the unit. The 40 V batteries of the Assist MAX are not compatible with the MAX+.
Three Foil Drive motors are compatible: the Retrofit High Power Motor Kit, the Retrofit Standard Motor Kit, or the Integrated Mast High Power Motor if you ride a Foil Drive integrated mast. Your choice depends on your mast and the power you want. We can help you decide at the shop.
The Assist MAX+ balances power and weight, with a good range. The Fusion aims for maximum thrust and the longest sessions, at the cost of greater bulk and weight. Both accept FM+ batteries, the Fusion with the FM+ Battery Adaptor.
Foil Drive recommends it for riders under 100 kg on short to medium boards. For riders over 100 kg, or for very long sessions, the Fusion is more suitable.
We are a shop for kite and wing sports, and also for foil. We are located in Pornichet, on the Atlantic coast. We are a Foil Drive reseller. We handle the brand's after-sales support from our shop. If you have any doubts about the compatibility of your unit, motor, or mast, call us or visit the shop. We will answer your questions with the equipment in hand.
▶ Need advice?
GlissEvolution, 2c avenue du Gulfstream, 44380 Pornichet (Loire-Atlantique)
09 62 64 74 77 | WhatsApp: 07 83 28 39 94, Tuesday to Saturday, 10am-1pm / 3pm-7pm
Test center available by appointment
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