SUP Kayak Conversion Kit

SUP Kayak Conversion Kit

Regular price$119.00
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Shipping calculated at checkout.
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  • Backordered, shipping soon

Bonus gift card terms

When to order

Place your order from up to, but not including, . Times are shown in UTC. Your order date determines eligibility; it can ship after the offer ends.

Discounts & bonus gift cards

  • Save up to 30% on select gear. Prices and discounts vary by product, edition and setup, subject to local stock.
  • Spend $500 and get $50; spend $700 and get $75; spend $1,000 and get $110.
  • Qualifying spend is the merchandise total after discounts, excluding taxes and shipping.
  • Each order receives one bonus gift card at the highest qualifying tier. Tiers do not stack, and separate orders cannot be combined.
  • The offer applies across markets. Thresholds are based on your checkout currency, and the gift card is issued in that same currency (currently USD). The numerical amounts stay the same; they are not converted from USD. For example, a GBP order of £700 earns a £75 gift card.
  • Your order must be paid in full and all items must be shipped before the bonus is emailed. Split shipments receive one card after the final shipment. No card is sent for a cancelled order or an order refunded before issuance.
  • The bonus is for a future purchase; it does not reduce the price of the qualifying order. Use it at checkout in the currency in which it was issued. The card has no expiry date, and unused balance remains available for later orders. Gift cards cannot be used to buy another gift card.

Shipping, returns & warranty

Boards marked 2026 carry a 5-year seam warranty: their seams are covered for 5 years, the rest of the board for 2. Junior boards, earlier editions, kayaks and accessories are excluded from this 5-year seam coverage.

Eligible products have a 30-day return window from delivery. Change-of-mind return shipping is paid by the customer. 2024 clearance boards accept returns for quality issues and do not include a board warranty.

Free shipping over $34.99 applies to eligible orders shipping to the contiguous US or Canada. Destination exclusions may apply. Other markets have their own shipping conditions.

  • Free shipping Over $34.99, Lower 48
  • 30-day returns From the day your order arrives
  • 60-Day Warranty Against manufacturing defects
  • Secure checkoutShop Pay, PayPal and major cards

Maximize your water adventures with our top-notch kayak conversion kit. Seamlessly transform your stand-up paddleboard into a versatile SUP-YAK, unlocking new possibilities on the water. Explore uncharted waters and unlock the convenience of a paddle board with kayak conversion kit. Perfectly compatible with our 2026 paddleboard packages for the ultimate water experience, featuring a lightweight and durable fiberglass blade for efficient paddling.

30-Day Guarantee

Try our gear for 30 days and if you are unsatisfied for any reason you may exchange your item(s) or return them for a full refund. For more details, check out our Returns page.

60-Day Warranty

We offer a 60-day Manufacturer’s Limited Warranty on paddles from the date of purchase. We guarantee against any abnormal defects in workmanship and materials within this period. Certain conditions apply. For more details, check out our Warranty page.

SUP Kayak Conversion Kit

SUP Kayak Conversion Kit

$119.00

Why Choose Thurso?

Pro-Grade Materials

Precision Engineered

50K+ Boards Sold

Real Value

Transform a Kayak SUP

Our SUP kayak conversion kit can easily convert your paddle board into a kayak in just minutes. Experience the best of both worlds with a paddle board kayak using just a single kit. The ergonomic kayak seat ensures a comfortable ride while the kayak blade paddle provides efficient propulsion. No need for complex tools or technical expertise to get a kayak paddle board hybrid. Simply attach the seat to the D-Rings on your board and insert the kayak blade onto your SUP paddle.

4-Inch Thick Seat Cushion

The inflatable seat features a 4" thick base that offers exceptional comfort and support for long paddling sessions. Perfect for reducing fatigue and enhancing overall paddling enjoyment.

Ergonomic Backrest Support

Designed with a contoured, ergonomic backrest, this kayak seat provides stable upper body support to help maintain proper posture while paddling. It’s ideal for reducing back fatigue during long sessions on the water.

THURSO SURF SUP Kayak Seat Hook

Quick and Easy Installation

No tools required—just clip the adjustable straps onto your board’s D-rings and you're ready to go. It fits THURSO SURF SUPs with D-ring kayak seat attachment points.

Built-In Rear Storage Pocket

A convenient mesh storage pocket on the back of the seat offers space for small essentials like a water bottle, sunscreen, or snacks—keeping your gear organized and always within reach.

FAQs

Wear what you are the most comfortable in! Clothing that allows free movement is best, and clothing that won’t be too heavy when wet.

For flat water paddling you will need one centre fin. For any type of waves, or paddle surfing,  look at 3, 4 and 5 fin set.

Your order will be processed within 3 business days. The order processing cut-off time is 3 pm ET. For orders placed after 3 pm ET, processing will begin the next business day.

  • 5 stars: 76 (75%)
  • 4 stars: 14 (14%)
  • 3 stars: 8 (8%)
  • 2 stars: 1 (1%)
  • 1 star: 2 (2%)
This is a bundle with no reviews of its own. The merchant set it to show reviews from the products it includes.
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Opining in Seattle
Almost perfect, but not...

First and foremost, I found this SUP Kayak Seat to be well designed, easy to install and adjust, comfortable and reasonably priced. After using it for two days, problems developed with the two front strap clips! One separated into two pieces and the other became "stretched" out (See pics). This occurred while simply sitting on the SUP enjoying the surrounding views. Clearly, the clips failed due to excessive force (e.g., defined as enough to make them fail). I am about 5'11" and 172lbs and I may have been sitting back in the seat vs. more upright, but one would not think this would cause such damage to the clips. I am not planning to warranty the seat, as I do think it is a good seat. The clips, however, are obviously lacking and I will be replacing them with ones that will be much stronger (Something for Thurso Surf to consider in their future manufacturing process)...

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Laszlo
Seat pad is super-comfy, back rest is poor quality

During the first use two of the carabiners broke. I changed them to proper stronger, standard carabiners (not really meant to be used for this purpose).

Then during the second use the material got torn.

Hi,

Thank you very much for bringing this to our attention, and I’m truly sorry for your experience.

We’ve recently upgraded the carabiners on the seat to a more durable version, which should be much stronger than the original ones. However, we hadn’t anticipated issues with the backrest tearing, as this hasn’t been a common problem. I’ve already shared your feedback with our product team to review and improve the quality of the backrest in future versions.

In the meantime, we’ve processed a full refund for the seat to your account as a gesture of goodwill. We really appreciate your honest feedback and your support in helping us improve.

J
Jason de Villiers
Stronger latches please

I’m 6’ 220lbs and after the first paddle the front latches were bending open. I replaced them with something stronger.

F
Franziska Strauch
Hybrid Paddel

Mit dem Paddel bin ich sehr zufrieden, es ist gut in der Handhabung und vom Gewicht her nicht schwer. Was ich gut finde es zu kombinieren, man braucht keine 2 Paddel Set‘s und kann ganz einfach umstecken, entweder als Subpaddel oder als Doppelpaddel verwendbar zum rudern, top :-)

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Philippe Bocciarelli Di Narni
Broke at first use

I was excited to finally use my paddle board I bought 18months ago. So before finally schedule vacation outing I bought the seat for my 6 year old to be comfortable and feel safe. So brand SUP and seat at Lake Arrowhead, boat wake flipped the board over, the bag which came with is not really secure on the seat as shown, gone and seat torn!!! I cant load a pic but I will be happy to send it.

K
Kirsten Saganowski
Comfy!

So fun to kayak on my SUP! I felt supported enough by the seat to be able to lean into my strokes and I was comfortable with paddling. My only suggestion is having some sort of foot support, perhaps a wedge that can also attach.

O
Odile Celier
Awesome add-on

I am so happy about my decision to buy a Thurso paddle board. I just tested my kayak seat today. It makes me enjoy the season for à longer period of time.

A
Alice Crawford
Extra paddle for windy conditions

Really pleased with my second paddle to allow the option of turning it into a kayak paddle particularly in a strong headwind.

K
Keri Frankenstein
SUP is Great…Roller Bag not so 3

This review is about the roller bag that came with the board. I Love the SUP - but the roller bag is starting to come apart I have only rolled it twice for short distance and only on my driveway. I take the board out of the bag from the back for my car..blow up the board in the parking lot…Bag does not get dragged or treated 1ly…Outside seams on the front pocket are weak…Anyway..maybe you can send a new bag…Newly ordered blade has not yet been used. Waiting for Thurso to get the Kayak seat in stock…Paddle that came with the board is okay…Just ordered a lighter two piece Paddle from QB...

C
CIBELE MEINERZ
awesome!

I love it and it is making my SUP experience even better. Totally recommend it!

C
Carl De Caesmaeker
Stylish and very comfortable seat

Stylish and very comfortable seat.
Only managed a couple of trips out with it though, only downside is I lent it to my partner to try out on her sup.
She loved it too, so doesn’t look like I’ll be getting it back anytime soon, if at all!

D
Dayna Baumeister
Surprisingly comfortable and very steady

Surprisingly comfortable and very steady. Spent more than 3 hours on the open Pacific off Vancouver Island with my board as a kayak using this seat and despite swells never once felt I was at risk of tipping. Better yet, my back never got sore despite the time out there (which usually happens in other kayaks. If you take your weight off it (say to get something out of the bag, it is slippery and you have readjust it for location, but otherwise I was impressed.

D
Dave Weddige
I a

I added foot rests. I also have 2 boards and two kits. Each kit came with a smaller paddle than my boards so now we have one small paddle and one large paddle

K
Keith E
Kayak conversion seat

Product came as ordered in a fast timely delivery. Very well built piece.

R
Roger
Easy to assemble

Easy to assemble.

J
Jorrit K.
Great product, even better service!

Great quality product by itself. Unfortunately the paddles arrived broken, I think the courier have stacked something heavy on it. But the good customer service of Thurso Surf did send me two brand new ones that arrived in perfect shape. Thanks Thurso Surf!

L
Laszlo Lager
Carabiners broken

During the first use two out of the four carabiners broke under the weight of my really thin 10 y.o. daughter. One has fallen apart at the pivoting axle, the other one bent open at the closing latch.

J
Jason de Villiers
Carbon Hybrid Paddle Blade

Good quality as expected!

J
Jonathan Carl
Good product

Good quality quick delivery

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SERGIO GRAZIANO DANTONI
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Andriy Dovhanyk
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Anonymous
Great addition to my Thurso SUP!

My young granchild likes to be on my SUP with me, so I have the seat conversion. This add-on make paddling so easy. No ones wants to whack their grandkid on the head while switching paddling sides, so a bilateral paddling system is great!

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Anonymous
Useless and cumbersome

I got this seat to feel as comfortable kayaking with my paddle board, as I would on an actual kayak. The material is nice and light, and the quality seems good. However, it was very difficult to adjust the seat properly to my board. I couldn't adjust the straps while the seat was clipped onto my board; all 4 straps had to be set exactly the right lenght before clipping them in, which ended up being quite the endeavor. Even after adjusting the seat to a somewhat comfortable angle, I couldn't lean completely onto the back of the seat without the bottom part slidding towards the front, and thus, necessating to reinstall everything again. This was very frustrating after all the effort it took to get the positioning right. Not being able to fully lean on the back of the seat defeats the purpose for me, and I am just as comfortable simply sitting on my board, legs crossed or bent; moreover, I don't have to carry an extra accessory. As is, I would not recommand. Perhaps, more instructions are needed for the installation, although it seemed quite simple on the website's video, I found it very difficult to install, and was not able to use it as intended.

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