Severne RAD Windsurf/foil Sail
£659.00 – £769.00Price range: £659.00 through £769.00
R4D (RAD)
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.
/ 025 R4D
/ 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

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.
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.
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.
CLICK AND COLLECT:
- If you are located in the UK at the checkout you will be able to select to collect from our Store in Gosport.
COURIERS WE USE:
- Royal Mail for small and medium parcels
- Parcel Force for medium items like kites, harnesses and iSUPs
- UPS, DHL & Parcel Force for larger items like booms masts and boardLarge items such as boards, booms and masts will be delivered in 3-5 days as bigger vehicles are required by the couriers and can induce delays.
DISPATCH: All items are dispatched from our Gosport Store and will experience a 24hr delay where we are closed on Tuesdays. Any orders taken after 1pm on Friday and over the weekend will be dispatched on Monday.
EU and Worldwide Postage: EU and Worldwide items are priced without VAT. Our webstore is not setup for orders outside the UK but if you would like to purchase from us please email us with your details and we will reply with a postage quote. Payment is required by Bank Transfer.
RETURNS: Use the address below for returns. If a refund is required we will refund only the value of the item(s) and not the postage. Returns must be made within 14 days unless the item is deemed faulty. Please include the original shipping label as this will have the order reference and you name on it.
RETURNS ADDRESS:
Andy Biggs Watersports
103 Bury Road
GOSPORT
PO12 3PR
DAMAGED ITEM: If an item is damaged in transit you must notify the us immediately upon delivery and let us know as soon as you can.
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