iSonic 2027 – Slalom Windsurf Board
Faster where it counts
Designed for pure slalom performance, the iSonic offers exceptional acceleration, control, and top-tier maximum speed. For 2027, targeted refinements to the cutaways on the 60 and 77 sizes further reduce drag and improve fin control, increasing average speed and confidence at peak performance.
Available in six sizes – 60, 63, 67, 73, 77, and 85 – and in two constructions: Carbon Reflex Sandwich and Wood Carbon Sandwich.
What's new for 2027
Revised cutaways for the 60
The updated cutaways reduce the wetted surface area around the fin for smoother tracking, a higher average speed that stays closer to top speed, and easier control of fin lift.
New cutaways for the 77
Inspired by the 2026 iSonic 73, the renewed cutaways ensure explosive acceleration, excellent fin lift control, and superior average and maximum speeds.
Key features
Double Step Cutaway
The refined step geometry promotes a clean water release, increasing fin lift and efficiency while maintaining control even at very high speeds.
Triangular stabilizer
The triangular stabilizer improves fin control and board stability, especially in gusty winds, allowing you to push harder with complete confidence.
Speed-oriented riding position
The optimized positioning of the rear straps reduces drag and promotes controlled fin lift, improving stability at top speed and overall slalom performance.
Flat-V to double concave hull
The hull shape balances acceleration out of the turn, control, and stability, offering efficient speed in a wide range of slalom conditions.
Extra volume in the midsection
Additional volume in the central part improves early planing, sustains momentum, and increases stability with powerful sails.
Wide mast track adjustment range
The revised mast track position allows for precise adjustment based on sail size, improving trim, acceleration, and control.
Eco-friendly straps
Made from FSC-certified plant-based Yulex foam (85% natural rubber) for a reduced CO₂ footprint.
Technical specifications
| Model | iSonic 60 | iSonic 63 | iSonic 67 | iSonic 73 | iSonic 77 | iSonic 85 |
|---|---|---|---|---|---|---|
| Volume | 91 L | 98 L | 111 L | 123 L | 129 L | 147 L |
| Length | 225 cm | 226 cm | 228 cm | 228 cm | 229 cm | 229 cm |
| Width | 60 cm | 63 cm | 67 cm | 73 cm | 77 cm | 85 cm |
| Tail width | 39.2 cm | 41.4 cm | 45.7 cm | 50.2 cm | 54.5 cm | 60.4 cm |
| Thickness | 12 cm | 12.2 cm | 13 cm | 13.2 cm | 12.0 cm | 12.2 cm |
| Hull | Flat V / double concave | Flat V / double concave | Flat V / double concave | Flat V / double concave | Flat V / double concave | Flat V / double concave |
| Fin box | Tuttle Box | Tuttle Box | Tuttle Box | Deep Tuttle Box | Deep Tuttle Box | Foil Box |
| Fin | Not included | Not included | Not included | Not included | Not included | Not included |
| Recommended fin | 28 – 32 cm | 30 – 34 cm | 34 – 38 cm | 36 – 40 cm | 38 – 44 cm | 44 – 48 cm |
| Sail range | 5.0 – 6.2 m² | 5.5 – 7.0 m² | 6.2 – 7.8 m² | 7.0 – 8.6 m² | 7.8 – 9.2 m² | 7.8 – 10.0 m² |
| Carbon Reflex Sandwich weight | 5.7 kg | 5.98 kg | 5.7 kg | 6.3 kg | 6.6 kg | 7.3 kg |
| Wood Carbon Sandwich weight | 5.9 kg | 6.2 kg | 6.5 kg | 7 kg | – | – |
Scroll the table horizontally on mobile to see all sizes.
Available constructions
- Carbon Reflex Sandwich – the lightest and most responsive construction, available in all sizes (60–85).
- Wood Carbon Sandwich – available in sizes 60, 63, 67, and 73.
Frequently Asked Questions (Q&A)
Who is the iSonic for?
It is a pure slalom board, designed for riders seeking acceleration, top speed, and high average speed, both in racing and high-performance fast freeriding.
What has changed in the 2027 version?
The updates concern the cutaways: revised on the 60 to reduce wetted surface area around the fin, and new on the 77, inspired by the 2026 iSonic 73, for more acceleration and better control of fin lift.
Which size should I choose?
It depends on the sail you will use: the 60 works with 5.0 to 6.2 m² sails, the 63 from 5.5 to 7.0 m², the 67 from 6.2 to 7.8 m², the 73 from 7.0 to 8.6 m², the 77 from 7.8 to 9.2 m², and the 85 from 7.8 to 10.0 m². The wider sizes (77 and 85) are recommended for light wind and large sails, the narrower ones (60 and 63) for strong wind.
Is the fin included?
No, the board is sold without a fin. The recommended length is indicated for each size: from 28–32 cm for the 60 up to 44–48 cm for the 85.
What type of fin box does it use?
The 60, 63, and 67 use a Tuttle Box; the 73 and 77 use a Deep Tuttle Box; the 85 is equipped with a Foil Box.
What is the difference between Carbon Reflex Sandwich and Wood Carbon Sandwich?
Carbon Reflex Sandwich is the lightest and stiffest construction, available in all sizes. Wood Carbon Sandwich, with a wood core and carbon reinforcements, is offered in sizes 60, 63, 67, and 73, with a slightly higher weight.
How much does the board weigh?
In Carbon Reflex Sandwich, weights range from 5.7 kg (60) to 7.3 kg (85). In Wood Carbon Sandwich, from 5.9 kg (60) to 7 kg (73).
Is it suitable for gusty wind?
Yes: the triangular stabilizer improves fin control and board stability precisely in gusty conditions, while the extra volume in the midsection helps maintain planing.
Does it plane early?
The additional volume in the midsection and the flat-V to double concave hull are designed to promote early planing and rapid acceleration, maintaining momentum even during lulls.
What material are the straps made of?
The straps are made of FSC-certified plant-based Yulex foam, composed of 85% natural rubber, for a lower environmental impact.
Can the mast position be adjusted?
Yes, the mast track offers a wide adjustment range to adapt the trim to different sail sizes and optimize acceleration and control.
ZZZSURF Shipping and Delivery
Buy with peace of mind: with ZZSURF you get your windsurfing, wingfoil, kitesurfing and watersports products delivered directly to your doorstep, anywhere in the UK and most European countries.
Shipping Times
- Italy: Standard delivery in 24/48 business hours from shipment for most items in stock.
- Europe: delivery in 2-5 business days depending on the country of destination.
- For islands, remote areas or bulky items (boards, SUPs, foils, rigs, masts and booms) delivery time may vary by 1-2 business days.
Shipping Costs
- Italy: Free shipping on orders over $50. For lower orders, a shipping charge may apply.
- EU countries: Cost starts from €24.90 for orders under €200, the price however may vary depending on country and volume of products. The exact calculation is displayed during checkout.
- For bulky products (boards, sails, foils, SUPs, kayaks, etc.) a surcharge may be required. It will always be clearly communicated prior to order confirmation.
Shipping Methods
- We ship with specialized express couriers (GLS, BRT, DHL, UPS, SDA, etc.), selected according to product type and delivery area.
- All products are packed carefully and, where necessary, with reinforced packaging to ensure maximum safety during transport.
- You will receive tracking via email/SMS as soon as the shipment leaves our warehouse.
Pickup at Headquarters
- You can pick up your orders for free at our ZZSURF warehouse in Gallarate Via Mameli 48 (VA) Italy - Please note this is not a store but a pickup point where orders already placed on the site can be picked up.
- You will be notified as soon as your order is ready for pickup.
Important Notes
- Always check the integrity of packages upon delivery and sign with reserve in case of damaged packaging.
- For any doubt or urgency, you can contact our customer service: info@zzsurf.com or WhatsApp directly from the website
- We also ship to Switzerland and UK: contact us for a customized quote.
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On ZZSURF, operated by Twoside srl, you can choose from several payment methods, all of which are secure and designed to provide you with maximum convenience:
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With Klarna you have the option to purchase now and pay off the amount later, choosing from various installment options as needed. A credit card is required to complete payment through Klarna. The maximum amount allowed, including shipping costs, is €1,500.
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If you prefer, you can also pay by bank transfer. You will receive all the necessary details when you place your order. Shipment will be made only after verification of receipt of payment.
After placing your order you will need to make the transfer payable to : Twoside srl , IBAN IT74M0326850240052341838010 indicating the order number
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