2026 Duotone Windsurfing Fin Set Quad (Slot|Slot) (4pcs)

By Duotone
Regular price €249,00
Dydis
Spalva

Pre-order, delivery within 7 business days. Express delivery available (€50) within 2–3 business days.

FREE DELIVERY FROM €150
14-DAY MONEY BACK GUARANTEE
DO YOU HAVE ANY QUESTIONS? +370 650 44215
DELIVERY INFORMATION
After purchasing our goods, couriers will deliver them to your home or parcel locker within 2-5 business days. In order to receive your parcel in the shortest possible time, we recommend ordering goods before 12:00 on the day. However, this does not guarantee that you will receive the goods within 2 days, especially during the festive period, when parcel machines are overloaded and couriers' workloads are significantly increased. You can always track your parcels with the tracking number you receive. Pick-up at our store, Rinktinės g. 55, 09207 Vilnius - FREE The cost of delivering small items to a parcel terminal is 2.95 EUR including VAT. The price of delivering medium-sized items to a parcel terminal is 5.95 EUR including VAT. Prices for delivery of larger items by courier start from 12.95 EUR including VAT.
RETURN POLICY
You can return faulty goods within 14 days without giving a reason if: the goods have not been used, have all labels, packaging and all accessories related to the goods are intact. You can find more information about consumer rights, returnable and non-returnable goods in - (Article 6.22810 of the Civil Code). You can return the goods to our store or by sending them to us at Rinktinės g. 55, 09207 Vilnius. Before doing so, please inform us: when the goods were purchased, what the defect is, along with the document proving the purchase of the goods. We will process your refund request as soon as possible, but it may take up to 14 days. Defective goods can be replaced with new ones, repaired, or the money paid can be refunded. If the buyer is not satisfied with the decision or believes that his rights have been violated, the buyer may apply to the State Consumer Rights Protection Service, at Viniaus g. 25, Vilnius 01402, www.vvtat.lt or to the court, through an extrajudicial complaint procedure (CC 6.2287, Art. 16, p. 1). Before that, but no later than within 3 months after the violation, by submitting a written request to the Seller, setting out his requirements. In accordance with the procedure provided for by law, the Seller will provide a reasoned, detailed written response, supported by documents, within 14 days. The buyer has the right to fill out a request on the European online dispute resolution platform ec.europa.eu/ord/
FIN

WAVE QUAD FIN SET

Duotone Fin Set Quad (Slot|Slot) 2026

Item-no. 14260-7241 · Sizes: 7.5+13.5, 8.0+14.0, 8.5+14.5, 9.0+15.0, 9.5+16.0 · Colors: C56 Black/Turquoise

Unleash the full power of your quad wave board. Introducing the all‑new QUAD fin set — the ultimate choice for riders who demand nothing less than uncompromising performance from their quad‑fin wave boards. Designed by Kai Hopf and based on over 30 years of experience working with the best wave sailors in the world.

Unlike generic “multi‑use” fin concepts, the QUAD set is engineered as a dedicated, no‑compromise quad system . Every outline, profile, and response characteristic has been purpose‑built for maximum control, drive, and agility in high‑performance wave conditions. This is the same design philosophy trusted—quietly but consistently—by many World Cup professionals who rely on Kai’s custom fins to stay ahead of the pack. Now, we’re making this top‑tier performance available to everyone.

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Shorter fins. Higher performance.

Proof of their level of efficiency is the fact that our fins are 1–2 cm shorter than comparable quad sets. This is made possible through our exclusive AI_FIN CAD software , which achieves a flawless profile transition in the critical tip area where the fin sweeps backward. The result?

Radically enhanced maneuverability

Great grip without being sticky

Instant response in every turn

Premium materials. Maximum precision.

The center fin is CNC‑milled from black G10 , an ultra‑dense, prepreg‑laminated fiberglass material renowned for:

Outstanding durability

Exceptional impact resistance

Easy sandability to repair ground‑contact damage

This is the level of reliability and performance that serious wave sailors demand.

Choosing the right size

Select your QUAD set according to the recommendations below. Oversized fins create excessive tail lift, making your board feel sticky and harder to turn . Proper sizing ensures your board performs exactly as intended—loose, fast, and precise.

Tech Features

Super Low Aspect Design

The extra-wide design allows us to shorten the fin length as much as possible without losing surface area. This shortest possible length is the base for all air and spin moves.

ZERO FLEX & TWIST DESIGN

The ZERO FLEX & TWIST DESIGN guarantees maximum release to let you slide smoother through massive double or triple moves.

PROFILE DESIGN

The thicker refined profile results in explosive acceleration and great counter-pressure to enable maximum pop to send you flying higher.

Black G10

G10 is an extremely compressed block of prepreg laminated fiberglass sheets. This block is placed in a CNC milling machine to create the final shape and profile.

AI_Fin_3D

Our software is based on math data-driven input. Apart from being much more accurate and faster, complex 3D design tasks such as the perfect profile transition in the crucial tip area, where the fin sweeps backward, would otherwise have been impossible to realize.

TWIST DESIGN

Progressive twist for tighter radius and improved control during the turn.

FLEX DESIGN

Flexier tip for more grip and control to improve short and radical turns on the wave.

BASE DESIGN

Wide and stiff fin base for direct power transmission.

MAX EFFICIENCY DESIGN

We use our own dedicated fin 3d software. This software enables a perfect profile transition in the crucial tip area, where the fin sweeps backward.

OUTLINE DESIGN

Strongly curved leading edge for maximum maneuverability.

Sizes & Specs

Fin Length (cm) Box System Technology Designer Rec. Board Types Rec. Board Size (l) Rec. Duotone Board(S)
FIN SET QUAD 7.5 + 13.5 7.5 + 13.5 SLOT · SLOT BLACK G10 KAI HOPF ANY QUAD WAVE BOARD 50-70 ULTRA GRIP QUAD 53+61+69
FIN SET QUAD 8.0 + 14.0 8.0 + 14.0 SLOT · SLOT BLACK G10 KAI HOPF ANY QUAD WAVE BOARD 70-85 ULTRA GRIP QUAD 76 + 82
FIN SET QUAD 8.5 + 14.5 8.5 + 14.5 SLOT · SLOT BLACK G10 KAI HOPF ANY QUAD WAVE BOARD 85-90 ULTRA GRIP QUAD 88
FIN SET QUAD 9.0 + 15.0 9.0 + 15.0 SLOT · SLOT BLACK G10 KAI HOPF ANY QUAD WAVE BOARD 90-100 ULTRA GRIP QUAD 94
FIN SET QUAD 9.5 + 16.0 9.5 + 16.0 SLOT · SLOT BLACK G10 KAI HOPF ANY QUAD WAVE BOARD 100-110 ULTRA GRIP QUAD 106

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