R4D_FOIL FREEMOVE
The R4D is designed for YOUR type of expression. Use it for freeride foiling, ride it as a freestyle sail, carve moves on your foil, and go as R4Dical as you dare.
Designed with Balz ‘Radiculo’ Müller, this sail adapts to every rider’s ambition. Balz pushes it through signature aerial stunts while the R4D remains accessible for everyday sessions, transcending traditional boundaries. The new FoilWave dimension opens unexplored territory – draw lines in waves regardless of conditions.
Four battens – that’s what the “4” in R4D delivers. This configuration maintains precise balance between maneuverability and stability throughout the entire size range. Smaller sizes enhance quick turns, mid-range delivers versatile performance, and larger sizes provide freeride power without adding weight.
A sturdy, but lightweight construction makes the R4D among the lightest in class. Premium materials and strategic panel layout strip away excess weight without sacrificing durability. Less weight means more response and longer sessions.
Rediscover that true feeling of freedom that started it all. The R4D’s versatility, promoted by an Xtended Range, strips away complexity; maximum range, minimal equipment. Break barriers, R4Dical freedom awaits.
/ All new concept
/ Xtented Range
/ Possibly the lightest all-round no cam foil sail.
SIZES: 4.0 / 4.4 / 4.8 / 5.2 / 5.8 / 6.4
R4D_FOIL FREEMOVE
The R4D is designed for YOUR type of expression. Use it for freeride foiling, ride it as a freestyle sail, carve moves on your foil, and go as R4Dical as you dare.
Designed with Balz ‘Radiculo’ Müller, this sail adapts to every rider’s ambition. Balz pushes it through signature aerial stunts while the R4D remains accessible for everyday sessions, transcending traditional boundaries. The new FoilWave dimension opens unexplored territory – draw lines in waves regardless of conditions.
Four battens – that’s what the “4” in R4D delivers. This configuration maintains precise balance between maneuverability and stability throughout the entire size range. Smaller sizes enhance quick turns, mid-range delivers versatile performance, and larger sizes provide freeride power without adding weight.
A sturdy, but lightweight construction makes the R4D among the lightest in class. Premium materials and strategic panel layout strip away excess weight without sacrificing durability. Less weight means more response and longer sessions.
Rediscover that true feeling of freedom that started it all. The R4D’s versatility, promoted by an Xtended Range, strips away complexity; maximum range, minimal equipment. Break barriers, R4Dical freedom awaits.
/ All new concept
/ Xtented Range
/ Possibly the lightest all-round no cam foil sail.
SIZES: 4.0 / 4.4 / 4.8 / 5.2 / 5.8 / 6.4
CONGRATS ON YOUR SAIL CHOICE
“The new R4D is here – the smooth operator for your funboarding adventure!
To me, funboarding is any time of windsurf action, fin, foil, whatever, it’s my life.
No matter if you’re planning to cruise windfoiling on the flat lake or drawing
new lines in waves, jumping radical moves on your foil or fin, the effortlessly
power moves you forward.
The sail feels light, playful, and easy to control, giving me the confidence to
try new things and push my limits with style.“
| RAD | Luff | Boom | Battens | Weight (KG) | Head | Recommended Mast | RDM/SDM | Enigma Boom | Extension |
|---|---|---|---|---|---|---|---|---|---|
| 4.0 | 400 | 145 | 4 | 2.52 | fixed | RDM RED 370 | RDM | Enigma 140 | CYCLOPS |
| 4.4 | 416 | 149 | 4 | 2.62 | fixed | RDM RED 400 | RDM | Enigma 140 | CYCLOPS |
| 4.8 | 433 | 152 | 4 | 2.79 | fixed | RDM RED 400 | RDM | Enigma 140 | CYCLOPS |
| 5.2 | 446 | 162 | 4 | 2.92 | fixed | RDM RED 430 | RDM | Enigma 150 | CYCLOPS |
| 5.8 | 463 | 168 | 4 | 3.11 | fixed | RDM RED 430 | RDM | Enigma 150 | CYCLOPS |
| 6.4 | 480 | 180 | 4 | 3.29 | fixed | RDM RED 460 | RDM | Enigma 150 | CYCLOPS |
TECHNOLOGY
CAMO THERMOFORMED TACK FAIRING
Protects your board from impact and neatly covers the foot detailing. It incorporates the rope stash pocket for easy storage of your downhaul rope.
MOLDED SOFT EDGE
With recessed grooving, covering any vulnerable stitching the moulded soft edge encloses the hard edge long the foot of the sail and protects the stitching from wear along the board non-skid.
GRADIENT PANEL TECHNOLOGY
Using the new GRADIENT PANEL TECHNOLOGY. Corners have overlapped panels which reduces the amount of patching. At the same time these overlapped areas extend into the body of the sail so it transitions the load much better, will be less stretch over time. It’s a more stable way of building sails.
Xtended Range
Xtended Range technology that allows for bigger gaps in your quiver.
Xtended Range was developed to increase wind range at both the lower AND higher ends: deeper, more powerful profiles are locked in place with added skin tension to enhance control and stability.
Exhaust flames
Hand drawn exhaust flames keeps you cruising in style.
Hand drawn logos
The R4D is also a work of art. Enjoy hand drawn logos on the sleeve, leech, and foot of the sail.
“The new R4D feels light, playful, and easy to control, giving me the confidence to push my limits with trust and style.“
“The new R4D feels light, playful, and easy to control, giving me the confidence to push my limits with trust and style.“
GRADIENT PANEL TECHNOLOGY
With the new GRADIENT PANEL TECHNOLOGY improvements are obvious. Lighter weight and better stability.
Using the new GRADIENT PANEL TECHNOLOGY. Corners have overlapped panels which reduces the amount of patching. At the same time these overlapped areas extend into the body of the sail so it transitions the load much better, will be less stretch over time. It’s a more stable way of building sails.
The GRADIENT PANEL TECHNOLOGY logically reduces weight, increases strength and controls stretch. Overall weight is reduced but the more significant improvement is the feel – quicker reacting and lighter feel.
Rather than a single curved luff panel, we use separate panels – split luff – that radiate out of the head and tack corners. This perfectly aligns the sail material with the direction of load.
Previously the curved panel would have bias stretch in all the wrong places. Direct transmission of power. Increased longevity.
RECOMMENDED
/ BOARD
PREDATOR
ALIEN
/ MAST
R4D is recommended for RDM masts.
RDM RED – For ultimate performance.
RDM BLUE – High end performance with increased reliability.
GORILLA – For durability with an unconditional 2 year limited warranty.
/ BOOM
ENIGMA – For ultimate performance.
METAL – For high end performance.
/ EXTENSION
CYCLOPS
COMPARISON
/ FREEK
The R4D is foil specific.
The R4D is better suited for freemove and freeride, especially in the bigger sizes.
/ Gator
The R4D is better suited for foiling.
The R4D has 4 battens.
The R4D is less expensive.
/ FoilGlide
The R4D is a light but sturdy no cam sail.
The R4D is more manoeuvre oriented.
FAQ
WHAT IS THE DIFFERENCE BETWEEN THE FREEK AND THE R4D?
Both sails perform well in light winds, but the R4D will generate more lift due to its higher aspect design, and thus, slightly earlier planing/flight. The Freek, however, will provide a wide wind range in both upper and lower limits.
If you are mostly foiling, the R4D is your go-to sail. If you freestyle on the fin, the Freek is the right sail for you.
The R4D is 4 batten.
The FREEK is 5 battens.
The R4D is more powerful.
The FREEK is more stable.
The R4D planes earlier.
The FREEK is a dedicated fin-freestyle sail.
CAN I USE THE R4D ON THE FIN?
While the R4D is designed as a foil first sail, it also has the cross over capabilities to ride it on the fin.
WHERE CAN I ORDER SPARE PARTS OR MATERIALS TO REPAIR MY SAIL?
You can order spare parts and repair material from your local dealer or distributor. Use the dealer locator to find your nearest SEVERNE dealer.
CAN I USE A NON-SEVERNE MAST IN MY SAILS?
All of our development, testing, rigging, and tuning are done using Severne masts. We don’t test the performance or bend curves of other masts, and can not guarantee which performance or durability you can get out of your sail using a different brand mast. Therefore, we strongly recommend our customers use SEVERNE masts.
WHAT IS THE RECOMMENDED MAST FOR THE R4D?
HOW DO I RIG MY SAIL?
Check out our rigging guides section here.