Sea Devil 840 | Modular Hydrofoil 2-in-1 SABFOIL

Name: Sea Devil 840 | Modular Hydrofoil 2-in-1 SABFOIL
Brand: SABFOIL
SKU: SD840
Price: 726.5 GBP
Availability: InStock

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£726.50

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Description

SABFOIL Sea Devil 840 | Modular Hydrofoil 2-in-1

Two souls. One foil. Precision and speed in every condition.

Engineered for riders who demand more from their light wind sessions, the Sea Devil 840 is SABFOIL’s most compact and responsive hydrofoil in the Sea Devil range. Whether you're carving waves, freeriding, or pushing your limits in freestyle and downwind, this modular 2-in-1 foil adapts to your style and conditions.

Dual Riding Modes:

Tail Mode (with Stabilizer): Delivers rock-solid stability and smooth control, perfect for speed, transitions, and confident freeriding.
Raw Mode (without Stabilizer): Unlocks extreme agility and a surfy, ultra-reactive feel – ideal for experienced riders chasing a direct connection to the water.

Built for Progression and Performance

Top Speed: 22–24 knots
Takeoff Speed: 10–12 knots
Aspect Ratio: 3.3 (Front Wing)
Weight: 2.28 kg (Raw) / 2.48 kg (Tail)
Front Wing Span: 840 mm
Surface Area: 2122 cm²

Key Features:

Full Carbon Monocoque Construction – No fuselage, no compromise. Experience ultra-direct feedback and reduced drag for maximum performance.
Compact & Reactive Geometry – Tight turns, fast acceleration, and high maneuverability in all conditions.
Self-Stabilizing Profile – Stable when you need it, responsive when you want it.
Modular Design – Easily configure your setup for kite, wing, surf, SUP, or downwind foiling.

Designed for lighter or advanced riders, the SD840 is perfect for those looking to ride dynamically in light to medium winds (12–25 knots), with the option to ride radically or smoothly depending on your mood and setup.

One foil. Two experiences. Total freedom.

Let customers speak for us

from 52 reviews

S Rose

05/07/2025

Great Product and service

I purchased a pair of neoprene car seat covers to replace old ones and wasn’t disappointed. Good quality, easy to fit and ideal for providing protection of the seats. The anti slip backing is a gem and the fit is excellent. The process from point of order to delivery was very good although the system did generate follow up emails when left in basket. This was explained to me when making telephone contact with polite and friendly staff. Thank you.

Surflogic Neoprene Single Seat Cover

Mark Green

04/23/2025

Great stable board as a beginner.
Lots of help from Adam

Ensis - Rock N Roll Hard Board

Nate Booth

04/14/2025

Epic Badger

Bought the badger to progress my riding (had a north cross prior) and noticed a massive difference on first time out, super responsive, fast turns and can charge down the line!!! Highly recommend!!! Top advice and assistance from Northern Watersports to help me choose this board!!!!

Core - Badger Surfboard

Daniel

03/04/2025

Northern kites are a great company and Ozone are the best kites

OZONE - Enduro V4 Kite

Harvey T

02/21/2025

Best wing on the market for the money?

I have tried a multitude of high tier wings over the past year, and the Vayu's are my favourite by far. I opted for the Blue in 3.5m. I have had a few sessions on it now, and I am blown away by the performance. There is so much power, control, and maneuverability in this wing, it handles the gusts with ease, has a crazy good upwind angle, and is insanely stiff and light, thanks to the aluula section where the front leading edge meets the strut. I also opted for the boom for this 3.5m, but not for my 5m Aura X, as I wasnt sure on the idea, but now I regret not buying one for the 5m, as its definitely a must for winging now.

AURA III - Freeride / Wave - VAYU

pete hicks

01/03/2025

Lieuwe Falcon

after nearly 3 years of riding a well known and very very good carbon TT i decided it was time to have a new TT. Many searches and opinions gathered over a few days and i had 3 in the basket - one however was consistently out front ...so i got a Falcon.
This TT is magic ! it suits my riding perfectly - jumping , going fast and carving about - the Falcon i cannot get to skip out on carves - it just grips and grips heel side to toeside and vice versa its on rails.
Its super soft in chop with just the right amount of flex when needed and oh boy is it light ! and there's the downside - be careful on the beach because as its so light it can get blown up the beach- superb board ! Only tip I'd have is to try and get the black fins - mine are white and the leading edge of the fins are stained brown - probably a result of blasting around with seaweed in the water

Falcon Lieuwe Board

Dale Rose

12/13/2024

always Great Service and thank you

Great Service and always like dealing with a Supplier you can trust, thank you for my recent order and making sure it was delivered on time - Rare these days however I know that Adam will ensure a great price and great service.

WOO Sport 4.0 - Measure Your Jump Height

Graham White

12/11/2024

Unbelievable!!

Coming from another carbon board, the Lieuwe Falcon is in another league! Instantly felt grippy, fast and playful with effortless pop but the main difference was how easy it was on my knees in chop compared to my other carbon board. Lieuwe have got the flex absolutely perfect!! Can’t wait to get more sessions in now. I thought the Shotgun was good years ago but this was definitely the right decision to buy.
Big thanks to Adam at Northern Watersports for the fast order and setting up the board. 🤙🏽🤙🏽🤙🏽

Adam

Awesome Board

Loved this board from the first second. Grips the water to give amazing jumps.

Paul Craft

12/07/2024

Ensis Score V3

Great price, super fast delivery, will definitely be back !

ENSIS SCORE V3 WING

Sean Burns

12/02/2024

Cskins beanie

Great product

C-Skins - Storm Chaser 2 mm Beanie

Penny Jones

11/17/2024

Perfect winter sea swim hat

I love my C-skins beanie, it’s perfect for winter sea dips

11/06/2024

NK Let it fly long T

Great good quality shirt to join my kite surfing collection

Let It Fly - NK Long Tee White

Karl Wright

10/25/2024

Ocean Rodeo / Mustang Survival - Dry Suit - SOUL

I have not actually used this yet on the water, but the quality is great along with the Fit. Very easy to get on and off with the bonus that the dry suit does not actually look like most and infact looks and feels very good

Mustang Survival / Ocean Rodeo - SOUL Drysuit - Blue

10/11/2024

I'm loving my suit .

I'm now very happy with the suit and service from Northern Kites . I did find the neck seal far too tight and my efforts to stretch it enough didn't work. Northern diver did a great job of putting in a replacement seal and now it fits perfectly. I've no hesitation in recommending it overall.