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Try out the e-SUP

Electric propulsion on the water: quiet, powerful, effortless. For everyone who loves paddling, seeks adventure, or simply wants to enjoy moments of relaxation on the water. JAYKAY is synonymous with innovative technology, high-quality workmanship, and authentic experiences. Developed to make freedom tangible.
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DISCOVER JAYKAY

Climb aboard, set off, and enjoy the ride: the JAYKAY electric fin transforms stand-up paddleboarding into a whole new experience. The quiet, powerful motor guarantees relaxing excursions, longer routes, and more time on the water. No complicated assembly, no cables: just attach it to your SUP or kayak and set off right away. Whether it's a leisurely trip on the lake, a sporty excursion at sea, or a helping hand in windy and wavy conditions, the JayKay electric fin adapts, works reliably, and offers freedom at the touch of a button. Developed in Germany, it stands for quality, sophisticated technology, and maximum enjoyment.

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Electrify any watercraft, whether it's a SUP, windsurf, surfboard, or kayak.

JayKay
Pinna
Elettrica 2.0

Power up to 360 watts
Designed in Germany
Up to 6 hours of battery life
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Technology designed in Germany

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Tutorial and FAQ

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What our customers say

“My wife is so enthusiastic that now she wants an electronic fin too. I think I'll have to order a second one!”

Tanja Westerhoff

Let our customers speak for us.

4.9/5.0 average rating

“The simple mounting on the board without additional cables or batteries and the remote control on the paddle make this electric fin particularly innovative and easy to use.”

Willi Hunter

“The Jaykay electric fin is really very well designed. Everything is integrated into the fin, with no annoying cables or heavy batteries: just put it on and you're ready to go.”

Douglas Battles

The quality is simply impressive! I was really surprised by how powerful the fin is. It's really fun to use!

Samuel Kuhlmann

About us

Cutting-edge electronic mobility solutions
Mission
Our promise: maximum quality and precision
Quality
Cutting-edge technology
Innovative
Open and personal communication with our customers is very important to us.
Accessible
Clearer: remote control with LED display
New
About us
EARLYBIRD DISCOUNT INSTEAD OF €499, ONLY €399
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Technologye-Fin
General information
Technology e-longboard
Battery information 
withdrawal 
shipping 
exchange 
Re-Store Program

Technologye-Fin

Our e-Fin .0 can be easily attached to kayaks, canoes, inflatable canoes, etc. with a standard fin mount. If your kayak does not have such a mount, you can alternatively use our practical adhesive dock. Important: This only works if your kayak has a smooth, continuous surface on the underside—unfortunately, installation is not possible on textured or uneven surfaces.

Our tip: Take a close look at the underside of your kayak before buying—or send us a photo, we'll be happy to help!

Write to us!

e-Fin .0 meets the IPX8 standard for water resistance (up to 1 m).

 

The three most common adapters (slide-in/smartlock/US box) are included with the fin when you purchase it.
You can find all the additional adapters we currently offer on our website under Accessories.
You can find the exact dimensions and installation instructions for each adapter on the respective product page.
If you are still unsure, send us an inquiry via our contact form and attach a picture of your non-electric fin and the fin mounting system of your water sports equipment. es may also be es to tell us the brand and model directly.
No. Inflatable water sports equipment has the best handling characteristics. All other boards/kayaks are unfavorable for radio transmission or even impervious to radio waves, depending on the material they are made of. This is particularly true of boards containing carbon, which is completely impervious to radio waves.
Depending on the handling characteristics of the water sports equipment and the rider's weight, the e-Fin .0 can accelerate to up to 8 km/h.
Unfortunately, no. Only the thrust when starting off becomes stronger, as reaching cruising speed would require enormous amounts of energy to accelerate.
Es rules governing where you can and cannot ride on various bodies of water. Familiarize yourself with the local laws and be aware of swimming areas and other zones that are closed to water sports. Be considerate of your surroundings and ride with extra caution when other people and animals are present. How you ride affects how they
new mode of transportation is perceived by others.
Whether with or without e-Fin .0, to ensure you always have your board with you, we always recommend using the safety leash for SUP boards so that you don't lose your board in an emergency!
If you do not use this leash, the radio connection between e-Fin .0 and the controller will be lost after about 5-6 meters, and the motor will shut down!
Yes, the fin is also suitable for use in saltwater!
To protect the charging port of your fin from corrosion, etc., especially in salt water, we recommend using the charging port cover provided. Rinse the fin with fresh water after EVERY use and rub the charging ports dry.
You will find instructions for this in the operating manual on page 16.
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General information

After you have successfully placed your order, we will send you an order confirmation by email. You will also receive an email from us when your package has been shipped and leaves our warehouse. If you have a customer account, you can view the status of your order at any time.
24 months on the e-Fin .0 and 6 months on the battery.

We offer the following payment options:

 

credit card 

Es form Es where you must enter your credit card details. We will charge the account when we ship the ordered goods to you.

 

PayPal 

You will be redirected to PayPal, where you will need to log in and follow the instructions provided by PayPal.

 

Purchase on account (pay later with Klarna)

Pay conveniently by invoice after you have received the goods. Installment payments are also possible via Klarna.

 

instant transfer 

After completing the order process, you will be redirected to the corresponding homepage. Please log in and follow the instructions provided by the payment provider.

If you have received a voucher code, you can enter the code in the designated field at checkout. If your voucher code does not work, it is either no longer active, has already been used, or the promotional period has expired.

If your product is faulty or defective, please contact our service team by email:de. In order to process your request quickly, we need the following information from you:
1. Please send us a copy/picture of your invoice for the defective product.
2. In order to process the defect quickly, we require a detailed description of the fault and, if necessary, pictures/videos.
3. Please send us your full address in case the item es exchanged.

If you wish to cancel your order, please send an email to de as soon as possible, stating your order number. We can cancel your order as long as it has not yet been packed. Once your order has been successfully canceled, you will receive an email confirmation and we will refund your payment immediately.

If your shipment has already been prepared for dispatch, we will unfortunately be unable to cancel the order. You may exercise your right of withdrawal within 14 days of receiving the goods and return them to us.

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Technology e-longboard

In Germany, the use of electric longboards, as with regular skateboards and longboards, is currently only permitted in areas not subject to traffic regulations and on private property. Legalization at the legislative level is currently in progress.

Other countries have different regulations. You should take these into account before making a purchase.

What happens to my board if I fall or jump off? 

The electronics detect when a rider moves away from the board. As soon as a distance of 2-3 meters is exceeded, the board rolls away.

The urethane rollers can be replaced quickly and easily. Replacement rollers in different colors and sizes are es our shop. The motor does NOT need to be replaced.

Of course! However, this will halve the range and power, and the e-axle may overheat more quickly due to the increased load. An additional controller can be purchased for the second deck. 

We generally recommend riding with two e-axles. A single e-axle would only be suitable for children or light adults weighing up to approx. 45 kg. 

As long as the rider is supported by the board, they can es ride es with our e-axles. Only the range, maximum speed, and flexibility may be affected. 

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Battery information 

Not with the battery technology currently in use (Li-Ion). This myth dates back to the days of Ni-Cd batteries. Completely discharging the battery before charging it actually reduces its service life. "Conditioning" the battery does not work either. If it is defective, the only solution is to replace it.
If you try not to completely discharge the battery, but only down to about 30%, you can gain up to 3 times more cycles. The battery should be stored at about 50% charge in a cool and, above all, dry place. The refrigerator is therefore only suitable to a limited extent.
A charging cycle describes charging from 0 to 100%. Charging from 80% to 100% is therefore NOT a full charging cycle. Charging twice from 50% to 100% is, however, one charging cycle.
A lithium-ion battery loses capacity over time simply due to age. In addition, the number of charging cycles also affects performance. The battery contains a membrane, which wears out during charging and discharging. Similarly, the electrodes are worn down by chemical processes.
It indicates how much energy can be stored in the battery. If the capacity is halved, the possible working time of the fin is also halved. More capacity often also means a larger and heavier battery.
This is specified in ampere hours (Ah), i.e., how much charge can be drawn from the battery per hour. At the same voltage, the capacity can be increased by connecting several cells in parallel. Both the voltage (V) and the current (A) are relevant for the resulting runtime of the device.
If you have taken care to store the batteries of your e-Fin .0 at room temperature and protect them from low temperatures, there is nothing to prevent you from using them in your water sports equipment. Since lithium-ion batteries have no memory effect, you can recharge them regardless of their current charge status. They will not be damaged and will not lose any capacity.
When you charge your battery at moderate temperatures while es is below freezing es , the battery management system (BMS) monitors the charging process. Es not only Es self-discharge, but also detects potential risks to the cells, such as the danger of overcharging. When the battery reaches 100 percent, only the trickle charge is activated – so further "continuous charging" does not bring you any advantages, but rather dangers and unnecessary electricity costs. The greatest danger is an electrical fire, which can be caused by a defect in the socket or charger. You should therefore disconnect the battery from the charger in good time and only check the charge status after about three months. If necessary, you can then recharge it.
Of course, you can also ride the e-Fin .0 in winter – just follow these tips to avoid damaging the battery. Be sure to charge the battery at room temperature beforehand; around 20 degrees Celsius is ideal. Es also Es only attach the battery when you are ready to set off. After your ride, you should remove the battery immediately. Also, remember to store it at room temperature before recharging it.
Store the battery out of the reach of children and pets.
DO NOT store the battery near heat sources such as an oven or heater.
DO NOT leave the battery inside a vehicle on hot days. The ideal storage temperature is 22°C – 28°C.
Disconnect the charger when es in use.
DO NOT store the battery fully charged or fully discharged for long periods of time. If you do not plan to use the e-Fin .0 within the next 4 weeks, make sure that the charge level is between 25% and 75%. Otherwise, the service life and performance may be reduced.
Many harmful factors are prevented by the battery electronics, including deep discharge, overcharging, or excessive temperatures during charging/discharging. The protective circuit intervenes in these situations.
Avoid impacts that could damage the battery membrane, or storing it in very warm places (car in summer).
Damaged or suspected damaged batteries must not be charged under any circumstances. Damaged chargers must also no longer be used. Contact your dealer to discuss how to proceed.
Modern devices primarily use Li-ion batteries (lithium-ion batteries), which are characterized by their high energy density and low self-discharge. These batteries are particularly light and compact, which means they are still ready for use even after prolonged storage. Thanks to numerous safety precautions, such as electronic circuits and mechanical protective measures, the risk associated with their use is minimal.

The electric longboard axles are below the maximum permitted nominal energy of 100 Wh per device (single axle) and can therefore theoretically be carried in hand luggage. 

However, we have found that flight safety authorities occasionally arbitrarily refuse to allow devices with built-in lithium batteries to be carried on board, even if es is permitted es the regulations. 

The electric fin exceeds the maximum permissible rated energy and may NOT be carried on passenger aircraft. 

If you have any further questions, please contact us atde.

Unfortunately, no. To e-Fin the e-Fin completely sealed, we have to fill the entire inner cavity with a sealing compound. 

Important to know: The battery has a minimum service life of 500 charging cycles. After that, the battery is not broken, but gradually loses its full capacity. 

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withdrawal 

We can only guarantee a full refund if all items are returned in the condition they were in when delivered. The items must not be damaged, soiled, altered, or worn.

If items are returned anyway, the purchase price will not be refunded and we will send the items back to you. Please also note our 14-day return period. Unfortunately, we cannot accept returns outside of this period.

If the product(s) you ordered are defective, please contact our customer service immediately after receiving them. customer service. You are also welcome to send us photos of the defect so that we can find a solution for you as quickly as possible!

You can return your order to us within 14 days of receiving it. It is important that the products are undamaged and returned in the condition in which you received them.

Here's how it works:

1. Pack the items you do not wish to keep and return them to the condition in which you received them. Then simply place the items in a box, seal the package, affix postage, and send it to the following address: JayKay GmbH, Heidachstr. 70/2, 88079 Kressbronn, Germany

2. After handing over the package to the shipping service provider, we recommend that you keep the proof of delivery in a safe place so that you are covered in case the package is lost by the shipping service provider.

3. Once we have received your return, we will check the returned items and then issue a credit note to your chosen payment method. Please note that shipping costs will not be refunded for complete returns.

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shipping 

We ship all products from our German warehouse within Europe.

You can choose between regular shipping (3-5 days delivery time) and express shipping (1-2 days delivery time). 

Customers are responsible for paying additional costs such as customs duties and taxes.

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exchange 

Unfortunately, direct exchanges are not possible as we cannot guarantee the availability of the desired product. If you would like to exchange an item, simply reorder the item you want and return your first order to us. We will refund the purchase amount within 14 days of receiving your return.

Alternatively, you are welcome to contact our customer service team to check the availability of your desired product.

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Re-Store Program

Our goal es extend the life cycle of our products as much as possible. Simply send us your used but still functional e-Fin e-Axles, and in return, you will receive up to 20% of the purchase price back.

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