Duotone, 2025

Grip 4 SLS 2025

2240mm long · 7'4"

575mm wide

≈ 123mm thick · medium confidence

81litres

Open in Studio See it on duotonesports.com

Sizes & Numbers

Listed by the brand, read off a photo, or worked out: where every number comes from

In one line

Longer and leaner than most. A square tail, a medium nose and curvy rails.

derived · against the 104 other windsurf boards in the atlas, read off the outlines.

As listed by Duotone

Duotone Grip 4 SLS 2025: every size as listed by Duotone
size	length	width	thickness	weight
69 L	220 cm · 2200 mm	540 mm	≈ 113 mm · estimated	5.8 kg
76 L	222 cm · 2220 mm	560 mm	≈ 119 mm · estimated	6 kg
81 L	224 cm · 2240 mm	575 mm	123 mm · medium confidence	6.1 kg
87 L	225 cm · 2250 mm	585 mm	≈ 129 mm · estimated	6.3 kg
93 L	226 cm · 2260 mm	595 mm	≈ 135 mm · estimated	6.4 kg
99 L	228 cm · 2280 mm	605 mm	≈ 140 mm · estimated	6.6 kg
107 L	230 cm · 2300 mm	620 mm	≈ 146 mm · estimated	6.7 kg

Every size side by side, tails on one line, one scale

Next to your board?

Lay the Duotone Grip 4 SLS 81 L over up to four others, at one scale.

Compare with…

Shape & Rocker

From above, then from the side, true scale · the chosen size solid, the others dashed

Read off the 69 L outline · derived

52 %wide point, 1147 mm from the tail

4.07length over width

352mm wide 12″ from the tail

9,219cm² of planform

Read off the 76 L outline · derived

52 %wide point, 1157 mm from the tail

3.96length over width

364mm wide 12″ from the tail

9,648cm² of planform

Read off the 81 L outline · derived

52 %wide point, 1168 mm from the tail

3.90length over width

372mm wide 12″ from the tail

9,996cm² of planform

Read off the 87 L outline · derived

52 %wide point, 1173 mm from the tail

3.85length over width

378mm wide 12″ from the tail

10,215cm² of planform

Read off the 93 L outline · derived

52 %wide point, 1178 mm from the tail

3.80length over width

384mm wide 12″ from the tail

10,436cm² of planform

Read off the 99 L outline · derived

52 %wide point, 1189 mm from the tail

3.77length over width

389mm wide 12″ from the tail

10,705cm² of planform

Read off the 107 L outline · derived

52 %wide point, 1199 mm from the tail

3.71length over width

397mm wide 12″ from the tail

11,066cm² of planform

Rocker of the 69 L · scaled from the 81 L measured

51 mmtail rocker, at the tip

29 mm12″ from the tail

62 mm12″ from the nose

166 mmnose rocker, at the tip

487 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

113 mmat its thickest, 52 % from the tail

30 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 76 L · scaled from the 81 L measured

52 mmtail rocker, at the tip

29 mm12″ from the tail

63 mm12″ from the nose

168 mmnose rocker, at the tip

489 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

119 mmat its thickest, 52 % from the tail

30 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 81 L · measured

52 mmtail rocker, at the tip

30 mm12″ from the tail

64 mm12″ from the nose

170 mmnose rocker, at the tip

492 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

123 mmat its thickest, 52 % from the tail

31 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 87 L · scaled from the 81 L measured

52 mmtail rocker, at the tip

30 mm12″ from the tail

64 mm12″ from the nose

170 mmnose rocker, at the tip

493 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

129 mmat its thickest, 52 % from the tail

31 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 93 L · scaled from the 81 L measured

53 mmtail rocker, at the tip

30 mm12″ from the tail

65 mm12″ from the nose

171 mmnose rocker, at the tip

494 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

135 mmat its thickest, 52 % from the tail

31 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 99 L · scaled from the 81 L measured

53 mmtail rocker, at the tip

31 mm12″ from the tail

66 mm12″ from the nose

173 mmnose rocker, at the tip

497 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

140 mmat its thickest, 52 % from the tail

31 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 107 L · scaled from the 81 L measured

54 mmtail rocker, at the tip

31 mm12″ from the tail

67 mm12″ from the nose

174 mmnose rocker, at the tip

499 mmflat to within 3 mm, from 39 % to 61 % of the length

48 %of the length to the lowest point, from the tail

146 mmat its thickest, 52 % from the tail

31 mmlonger along the bottom curve than flat

Lay this rocker over other boards

True proportions · dots at 10 mm and 12″ in from each tip · bracket: flat to within 3 mm · Measured on Duotone's photo of the 81 L. Tail end set by Claude, not checked by a person.