Grip 4 SLS

WORLD CUP WAVE QUAD

Variant:

C51:clay

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Item-no. 14250-1001

You want a full custom board to ensure the best possible weight><strength ratio. But you still want a proven and tested shape from the brand with the longest experience in Windsurf board design. Look no further here comes the 20.25 GRIP SLS!

Because now all our 2025 Wave >< Freestyle boards are made in a FULL CUSTOM TECHNOLOGY. This makes the 2025 SLS boards again approx. 200g lighter yet much stronger than boards made in the usual semi custom construction: STRONG-LIGHT-SUPERIOR! For further details please see below under D/LAB vs. SLS vs. ORIGINAL.

But for us custom made stops at the shape of the board because custom shapes often turn out to be a surprise egg. 

Our GRIP SLS boards are constantly evolving designs and constructions to ensure we are continuously at the forefront of development yet with over 40 years of experience. We call them World Cup Wave boards as they are engineered to satisfy the best of the best on all kind of spots around the globe, from jumping-oriented side-on conditions like Pozo to down-the-line groundswell conditions like Hookipa.

During development, the major inputs came from 3-time PWA Wave World Champion Victor Fernandez and our next gen heroes Alexia and Carlos Kiefer and Tobias Bjornaa. We have selected these guys as they all have a very contest oriented riding style. Therefore instead of demanding super specialised and extreme shapes they always aim for:

  • Boards that are super balanced and easy to control in all kind of conditions without taking on a life of their own, to score maximum turns and jumps
  • Boards that are super versatile to sail and allow front- and back foot riding to get the most out of each wave even when the conditions are changing
  • Boards offering a maximum wind range to avoid being forced to switch boards during the heat

Well isn’t that exactly what we all expect from our wave board? And that’s why Victor, Alexia, Carlos and Tobias are our most important assets in the development process. In fact, all our GRIP SLS production boards are exact replicas of their best boards from the PWA tour.


Now the most important question you need to ask yourself is which fin configuration best suits your personal riding style:

  • The GRIP 4 with its Quad fin configuration gives you maximum drive and grip for committed rail to rail turns, even in XXL waves
  • The GRIP 3 has a slightly better acceleration due an efficient rocker with a lower-drag entry, which is especially helpful in jumping conditions. The Thruster fin configuration allows for earlier tail release for tighter/slashier turns, even in non ideal waves


At DUOTONE, the main objectives for all our products are weight saving but at no cost of durability and offering an unmatched plug & play setup. Cause these are the 2 things that help everyone, from beginner to pro level. 


Here is what we did to the 20.25 GRIP SLS lineup:

  • No 5 multi-setup fin-boxes: this just adds unnecessary weight and drag and is always a compromise since every fin configuration requires a different board shape (bottom and rail shape, outline, scoop-rocker line) to exploit its full potential. It also prevents the board from becoming tail-heavy/sticky. Plus finding a good working setup with 5 boxes is just the opposite of plug & play. 
  • The mini mast track reduces the weight in the critical nose area. It also reduces the risk to misplace your mast base while still providing just the right amount of length adjustment for all riding styles and sail sizes. 
  • The mini side fin boxes no longer offer any adjustment to prevent misplacing your fins. Now all adjustability for different riding styles and sail sizes is done through the center fin(s) only - simple and lightweight!
  • Our exclusive FULL CUSTOM layup based on over 40 years of experience got refined by DUOTONE chief board construction and QR manager Vasin Siritho.
  • Even the artwork got weight optimised by switching from heavy PVC to ultralight water-transfer stickers. 

All these efforts result in the best weight vs. durability out there. 

In addition, they simply work to their best right out of the box, just plug & shred.


YOUR NEW GRIP SLS DREAM MACHINES ARE READY AND WAITING FOR YOU TO TAKE YOUR RIDING TO THE NEXT LEVEL!

No-compromise quad shape
The GRIP 4 shape is 100% tuned to the quad fin setup
World Cup wave designs
All GRIP boards are designed to work all around the globe from groundswell Hookipa to onshore Pozo conditions.
Mini mast track and slot boxes
Weight saving plus maximum PLUG & PLAY through less options
FULL CUSTOM SLS TECHNOLOGY
The FULL CUSTOM SLS TECHNOLOGY is build like a real custom made board
Grip 4 SLS - C51:clay
Slower Waves
SNAPPY TURNS
Fast Waves
MAX. GRIP
Range Of Use
ACCELERATION & JUMPING
Range Of Use
KEEP SPEED DOWN THE LINE
Surfing Style
BACK FOOT SLASHES
Surfing Style
FRONT FOOT CARVING
Freestyle Ability
NEW SCHOOL
Freestyle Ability
CLASSIC
BOARD
VOLUME (L)
WIDTH (CM)
LENGTH (CM)
TECHNOLOGY
WEIGHT (KG) (+/-5%)
FITTINGS
MAX. SAIL SIZE (M²)
RIDER WEIGHT AS MAIN BOARD (KG)
RIDER WEIGHT AS SMALL BOARD (KG)
RIDER WEIGHT AS BIG BOARD (KG)
BEST MATCHING ION BOARDBAG*
Best Size
GRIP 4 SLS 69
69
54
220
FULL CUSTOM SLS
5.80
Fins: 2 x Quad Center (Slot) 14.5 + 2 x Quad Side (Slot) 8.5 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
5.0
60-70
65-75
55-65
Windsurf Core 230x58
Best Size
GRIP 4 SLS 76
76
56
222
FULL CUSTOM SLS
5.90
Fins: 2 x Quad Center (Slot) 14.5 + 2 x Quad Side (Slot) 8.5 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
5.3
65-75
70-80
60-70
Windsurf Core 230x58
Best Size
GRIP 4 SLS 81
81
57.5
224
FULL CUSTOM SLS
6.00
Fins: 2 x Quad Center (Slot) 15 + 2 x Quad Side (Slot) 9 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
5.7
70-80
75-85
65-75
Windsurf Core 230x58
Best Size
GRIP 4 SLS 87
87
58.5
225
FULL CUSTOM SLS
6.15
Fins: 2 x Quad Center (Slot) 15 + 2 x Quad Side (Slot) 9 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
5.7
80-90
85-95
75-85
Windsurf Core 235x61
Best Size
GRIP 4 SLS 93
93
59.5
226
FULL CUSTOM SLS
6.25
Fins: 2 x Quad Center (Slot) 15 + 2 x Quad Side (Slot) 9 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
6.2
85-95
90-100
80-90
Windsurf Core 235x61
Best Size
GRIP 4 SLS 99
99
60.5
228
FULL CUSTOM SLS
6.50
Fins: 2 x Quad Center (Slot) 16 + 2 x Quad Side (Slot) 9.5 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
6.2
90-100
95-105
85-95
Windsurf Core 235x61
Best Size
GRIP 4 SLS 107
107
62
230
FULL CUSTOM SLS
6.60
Fins: 2 x Quad Center (Slot) 16 + 2 x Quad Side (Slot) 9.5 | 3 x Premium Strap 2.0 (double screw) | Mini Mast Track
6.2
95-110
100-115
90-105
Windsurf Core Stubby 230x63

Main color specs when repairing the board: Top: Pantone 112 C | Bottom: Pantone 3125 C

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Differences Full Custom Constructions

FULL CUSTOM D/LAB
(used on all D/LAB boards)

- For these boards we use our most high-tech raw materials (Carbon, Innegra/Kevlar) resulting in the lowest possible weights, crispest ride sensation and maximum dent-resistance.

FULL CUSTOM SLS
(used on GRIP 4/3 SLS, ULTRA FreeWave SLS, SKATE SLS, STINGRAY SLS)

- The SLS construction uses a lower Carbon content and the Innegra is replaced by our exclusive S_GLASS+. This results in a more attractive price level.
- These boards are approx. 300g heavier than the D/LAB boards.
- Due to the FULL CUSTOM CONSTRUCTION the SLS boards are stronger and lighter than comparable  boards made in the usual semi custom construction.

FULL CUSTOM WOOD
(used on ULTRA FreeWave)

- Our most price attractive boards made in FULL CUSTOM CONSTRUCTION. These boards feature wood reinforcements that effectively dampen peak loads.
- Compared to the predecessor model in semi custom technology these boards are approx. 200g lighter and yet even stronger.

TechFeature

FULL CUSTOM SLS TECHNOLOGY

The FULL CUSTOM SLS TECHNOLOGY is a full custom technology which is one hundred percent identical to high-end custom made boards.

Instead of using a mould to bring the EPS foam core into its final shape each EPS block gets CNC milled. This ensures maximum precision and saves weight. 

Same as with high-end custom board makers the major advantage lays in the processing. We call this SINGLE PROCESS TECHNOLOGY and it is the key to our industry-leading weight-strength ratio. Instead of combining working steps to save time and money every single step follows its individual process. So for example instead of joining the PVC sandwich with the EPS core in a single shot we vacuum-bag the top and bottom PVC shields with the EPS core separately. 

For all SLS boards we use our most sophisticated layup which consists of more than 50 individual parts and components.

The major difference compared to the FULL CUSTOM D/LAB TECHNOLOGY is the S-glass on the PVC sandwich for the SLS boards (like most wave boards on the market), while the D/LAB boards are equipped with a carbon-Innegra layer on the outside. Innegra is the best composite fibre to prevent dents. Dents caused by the mast touching the board (during catapults or when getting washed) are mainly an aesthetic issue. But if you want a board that stays dent-free, you should opt for the D/LAB version.

Last but not least even every single board size has an individual layup. That’s the final stage of individualization in construction.

Yet all of this is achieved without any sacrifice in durability since we always follow our core motto LIGHT DONE RIGHT.

Mini Mast-Track

The mini mast-track reduces the weight in the critical nose area. It also reduces the risk to misplace your mast base while still providing just the right amount of length adjustment for all riding styles and sail sizes.

Duotone Pro Pads

8-10mm thick duo density EVA (depending on the board type) provides best dampening comfort and control. The heat pressed diamond grooving pattern protects the EVA against abrasion and provides an extraordinary grip level. We only select EVA colours which don't look dirty after use and will also resist fading after hours in the sun.

Mini Side Slot Boxes

The mini side slot boxes no longer offer any adjustment to prevent misplacing your fins. Now all adjustability for different riding styles and sail sizes is done through the center fin(s) only - Plug & Play and lighter weight!

Fin Configuration

Quad for maximum drive and grip.

Deck Shape

Reduced dome deck shape results in a more stable/balanced stance, especially in drift & ride conditions.

Outline

Approx. 6cm longer than the GRIP 3 with a very similar max. width. The narrower nose and swallow tail result in a more curved rail outline in the middle to balance the enormous grip of the 4 fins.

Rail Shape

Thinned out rails towards the tail and nose for maximum drive.

Duotone Premium Strap 2.0

High quality closed cell neoprene for maximum longevity. Only black Lycra coating guarantees maximum comfort as well as maximum durability. The strap features measurement markings to allow you to quickly set up and replicate your individual size. Board specific attachments:

> All World Cup boards come equipped with double-screw plugs to prevent any twist and ensuring the most direct connection to the board

> All other boards come equipped with single-screw plugs to allow a faster repositioning of the straps plus a more comfortable ride due to a certain "give"

NEW - Completely revised and unique design:

+ 20% less weight

+ Significantly reduced elongation for direct connection and to avoid slipping in too far with risk of injury

+ Improved preforming for quick and easy assembly

Bottom Shape

Progressive double concave V front to back - ideal compromise between performance, manoeuvrability and control.

Rocker Line

Slightly more nose and tail rocker. The tail rocker balances the enormous grip of the 4 fins.

FULL CUSTOM SLS TECHNOLOGY

The FULL CUSTOM SLS TECHNOLOGY is a full custom technology which is one hundred percent identical to high-end custom made boards.

Instead of using a mould to bring the EPS foam core into its final shape each EPS block gets CNC milled. This ensures maximum precision and saves weight. 

Same as with high-end custom board makers the major advantage lays in the processing. We call this SINGLE PROCESS TECHNOLOGY and it is the key to our industry-leading weight-strength ratio. Instead of combining working steps to save time and money every single step follows its individual process. So for example instead of joining the PVC sandwich with the EPS core in a single shot we vacuum-bag the top and bottom PVC shields with the EPS core separately. 

For all SLS boards we use our most sophisticated layup which consists of more than 50 individual parts and components.

The major difference compared to the FULL CUSTOM D/LAB TECHNOLOGY is the S-glass on the PVC sandwich for the SLS boards (like most wave boards on the market), while the D/LAB boards are equipped with a carbon-Innegra layer on the outside. Innegra is the best composite fibre to prevent dents. Dents caused by the mast touching the board (during catapults or when getting washed) are mainly an aesthetic issue. But if you want a board that stays dent-free, you should opt for the D/LAB version.

Last but not least even every single board size has an individual layup. That’s the final stage of individualization in construction.

Yet all of this is achieved without any sacrifice in durability since we always follow our core motto LIGHT DONE RIGHT.

Mini Mast-Track

The mini mast-track reduces the weight in the critical nose area. It also reduces the risk to misplace your mast base while still providing just the right amount of length adjustment for all riding styles and sail sizes.

Duotone Pro Pads

8-10mm thick duo density EVA (depending on the board type) provides best dampening comfort and control. The heat pressed diamond grooving pattern protects the EVA against abrasion and provides an extraordinary grip level. We only select EVA colours which don't look dirty after use and will also resist fading after hours in the sun.

Mini Side Slot Boxes

The mini side slot boxes no longer offer any adjustment to prevent misplacing your fins. Now all adjustability for different riding styles and sail sizes is done through the center fin(s) only - Plug & Play and lighter weight!

Fin Configuration

Quad for maximum drive and grip.

Deck Shape

Reduced dome deck shape results in a more stable/balanced stance, especially in drift & ride conditions.

Outline

Approx. 6cm longer than the GRIP 3 with a very similar max. width. The narrower nose and swallow tail result in a more curved rail outline in the middle to balance the enormous grip of the 4 fins.

Rail Shape

Thinned out rails towards the tail and nose for maximum drive.

Duotone Premium Strap 2.0

High quality closed cell neoprene for maximum longevity. Only black Lycra coating guarantees maximum comfort as well as maximum durability. The strap features measurement markings to allow you to quickly set up and replicate your individual size. Board specific attachments:

> All World Cup boards come equipped with double-screw plugs to prevent any twist and ensuring the most direct connection to the board

> All other boards come equipped with single-screw plugs to allow a faster repositioning of the straps plus a more comfortable ride due to a certain "give"

NEW - Completely revised and unique design:

+ 20% less weight

+ Significantly reduced elongation for direct connection and to avoid slipping in too far with risk of injury

+ Improved preforming for quick and easy assembly

Bottom Shape

Progressive double concave V front to back - ideal compromise between performance, manoeuvrability and control.

Rocker Line

Slightly more nose and tail rocker. The tail rocker balances the enormous grip of the 4 fins.

TechFeature

3D View

YOUR PERFECT SAIL MATCH

Quote VICTOR FERNÁNDEZ (TRIPLE WAVE WORLD CHAMPION)

»THE GRIP 4 IS A NO-COMPROMISE QUAD DESIGN WHICH LIFTS TURNING, GRIP AND CONTROL EVEN IN XXL WAVES ONTO A WHOLE NEW LEVEL.«

— VICTOR FERNÁNDEZ (TRIPLE WAVE WORLD CHAMPION)

Any comments or questions? Here you’ll find first hand R&D / rider Information.

The more info you provide, the more specific the advice/help will be. Please let us know:

  • Your skill level

  • Your body weight and size

  • Mast(s) you plan on using with the sail

  • Board(s) you are using

  • Conditions/spots you are sailing at

Please note: To help as many people as possible follow the thread, the forum language is English only.