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Waydoo Subnado with handgrip mount on the beach beside a paddle board

SUP Motor Kit: What You Actually Need to Fit One

SUP Motor Kit: What You Actually Need to Fit One

Most people arrive at this question having already decided they want a motor on their paddle board. What stops them is not whether to do it, it is the parts list. Boards differ, fin boxes differ, and the kits on the market assume you already know which one you have. This is the fitment guide: what a Subnado SUP kit contains, which mount your board needs, how much thrust one unit actually delivers, and what the whole thing costs.

What is in the kit, and what it does

The Subnado SUP Kit is €439 at the time of writing. It pairs the compact Subnado propulsion unit with a quick-release mounting system, so the motor clips on for a session and comes off afterwards.

Verified figures for the unit in that kit: a 98 Wh built-in lithium battery, 100 W USB-C fast charging, and an IP68 rating to 60 m. It fits paddle boards, hard boards and bodyboards.

The detail that separates this from a motorised fin: the unit is a Subnado underwater scooter first. Take it off the board and it is a handheld dive scooter. A fin-box motor removed from its board is a paperweight until you bolt it back on. If your summer includes snorkelling as well as paddling, that matters to the value calculation.

Subnado SUP kit showing the propulsion unit and quick-release board mounting hardware

Which mount fits your board

This is where most orders go wrong, so work through it before you buy anything.

Inflatable SUP with a slide-in fin box. You need the Subnado Slide-In Fin Box Mount, €83. This is the most common case for inflatable boards sold in Europe.

Hard board with a US fin box. You need the Waydoo US Fin Box Mount, €48. The US fin box is the rectangular slot with a screw plate, standard on most rigid boards.

No usable fin box, or a kayak or bodyboard. You need the Subnado Board Bracket, €45. It attaches with high-strength nano-sticky pads rather than a fin box, measures 8.85 x 2.55 x 1.06 in and weighs 0.48 lb. This is the fallback when the board has nothing to bolt to.

You want more thrust than one unit gives. The Subnado Multi-Engine Mounting Plate is €108 and supports up to three Subnado units. It works with both the slide-in and the standard fin box mounts, and its components are removable so installation is not a one-way decision.

If you are unsure which fin box you have, look at the underside of the board before ordering. A rectangular slot with a screw and plate is a US box. A long open channel that a fin slides into and locks is a slide-in box. Anything else, use the bracket.

How much thrust one unit gives, honestly

A single Subnado unit is a cruising aid, not a replacement for paddling. The Standard unit runs 1.4 m/s on its own and 2.0 m/s with two units mounted, with a maximum runtime of 56 minutes and a 150-second Super Gear burst. The Lite unit is lighter on thrust at 6.5 kg and shorter on the burst at 50 seconds.

In practice one unit is enough to hold a line against light current, to shorten a long flat crossing, and to get back to the launch when your arms are done. It will not push a loaded board at speed against a stiff headwind. If that is your use case, plan for two units and the multi-engine plate from the start rather than buying once and upgrading later.

Two people carrying compact Waydoo Subnado underwater scooters along the shore

What the complete setup costs

Setup Parts Total
Inflatable SUP, single unit SUP Kit €439 plus slide-in mount €83 €522
Hard board, single unit SUP Kit €439 plus US fin box mount €48 €487
Any board, adhesive mount SUP Kit €439 plus board bracket €45 €484
Twin-unit setup SUP Kit €439 plus Subnado Standard €499 plus multi-engine plate €108 plus mount from €1,129

Prices are at the time of writing. The kit carries a 2-year warranty on the main unit, with rear cover, charger, handle brackets and wired controllers covered for 6 months.

Who this is not for

If you want to be lifted clear of the water rather than pushed along it, this is the wrong product and you want a Flyer EVO instead. If you already ride a foil board and want assistance getting onto foil, that is the FoilBoost, not a Subnado. The SUP kit is for people who want a paddle board that travels further with less effort, and who value the motor being usable off the board as well.

Ordering from Europe

Waydoo Europe is the official European distributor and ships from EU stock, so there are no customs surprises and warranty claims are handled on the continent. Dealers across Europe can show you the mounting system in person before you commit, which is worth doing if you are unsure about your fin box.

See the Subnado SUP Kit

Related reading: our guide to motorising a paddle board, the Subnado model comparison, and where to find your nearest dealer.

Frequently Asked Questions

Can I fit a motor to an inflatable paddle board?

Yes. Inflatable boards with a slide-in fin box take the Subnado Slide-In Fin Box Mount at 83 EUR. Boards with no usable fin box take the adhesive board bracket at 45 EUR instead, which attaches with high-strength nano-sticky pads.

How fast will a SUP motor push my board?

A single Subnado Standard unit runs at 1.4 m/s, rising to 2.0 m/s with two units mounted on a multi-engine plate. Load, board shape and conditions all affect the real figure, so treat these as the manufacturer ceiling rather than a guarantee.

Can I take the battery on a plane?

The unit supplied in the Subnado SUP kit uses a 98 Wh built-in battery, which sits under the 100 Wh cabin limit most airlines apply to lithium batteries. Confirm the current rule with your airline before you fly.