Firewire, 2025

Firewire Groove 2025

1626mm long · 5'4"

483mm wide

56mm thick

25.8litres

See similar boards

Open in Studio See it on firewiresurfboards.com

Sizes & Numbers

Listed by the brand, read off a photo, or worked out

In one line

Shorter and fuller than most. A rounded pin tail, a medium nose and gently curved rails.

derived · against the 146 other surf boards in the atlas, read off the outlines.

As listed by Firewire

Firewire Groove 2025: every size as listed by Firewire
size	length	width	thickness	weight	price
25.8 L	5'4" · 1626 mm	483 mm	56 mm	–	US$890
27.7 L	5'6" · 1676 mm	489 mm	57 mm	–	US$890
29.2 L	5'7" · 1702 mm	495 mm	59 mm	–	US$890
31.1 L	5'8" · 1727 mm	502 mm	60 mm	–	US$890
32.5 L	5'9" · 1753 mm	508 mm	62 mm	–	US$890
34 L	5'10" · 1778 mm	511 mm	64 mm	–	US$890
35.6 L	5'11" · 1803 mm	514 mm	65 mm	–	US$890
37.2 L	6'0" · 1829 mm	518 mm	67 mm	–	US$890
38.8 L	6'1" · 1854 mm	521 mm	68 mm	–	US$890
40.5 L	6'2" · 1880 mm	524 mm	70 mm	–	US$915
43.4 L	6'4" · 1930 mm	533 mm	71 mm	–	US$915

Prices as the Firewire store showed them on 2026-10-27, in its currency · the cheapest version first, every version on hover

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

Which Groove Size for Your Weight?

The Firewire Groove 2025 size each rider would pick, by weight and level

Your weight

kg≈ 165 lb

Your level

75 kg · getting there · look for 33.8–41.3 L

The Groove 37.2 L

5 sizes fall in your range; the 37.2 L is nearest its middle.

Other boards for you

A rule of thumb (0.45 to 0.55 L per kg you weigh), not Firewire’s chart

Every weight and level

Firewire Groove 2025: the size for a rider of 60 to 105 kg, by level
level	60 kg	75 kg	90 kg	105 kg
First sessions0.6 to 0.9 L per kg you weigh	43.4 L	43.4 L · small	too small	too small
Getting there0.45 to 0.55 L per kg you weigh	29.2 L	37.2 L	43.4 L	43.4 L · small
Confident0.38 to 0.45 L per kg you weigh	25.8 L	31.1 L	37.2 L	43.4 L
Expert0.33 to 0.38 L per kg you weigh	too big	25.8 L	32.5 L	37.2 L

Rules of thumb, not Firewire’s chart · “small” and “big”: the nearest size, just outside the range · How the sizes are worked out · Find your board

Next to your board?

Lay the Firewire Groove 25.8 L over up to four others, at one scale.

Compare with…

Generations

After it · 2026

The 2026 27.7 L is the same length and width as the 2025 27.7 L. Open the 2026

listed length and width

2025 27.7 L 2026 27.7 L

The Firewire Groove over time

Shape & Rocker

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

Read off the 25.8 L outline · derived

53 %wide point, 865 mm from the tail

3.32length over width

390mm wide 12″ from the tail

6,319cm² of planform

Read off the 27.7 L outline · derived

53 %wide point, 892 mm from the tail

3.43length over width

385mm wide 12″ from the tail

6,499cm² of planform

Read off the 29.2 L outline · derived

53 %wide point, 906 mm from the tail

3.44length over width

389mm wide 12″ from the tail

6,684cm² of planform

Read off the 31.1 L outline · derived

53 %wide point, 919 mm from the tail

3.44length over width

392mm wide 12″ from the tail

6,871cm² of planform

Read off the 32.5 L outline · derived

53 %wide point, 933 mm from the tail

3.45length over width

395mm wide 12″ from the tail

7,060cm² of planform

Read off the 34 L outline · derived

53 %wide point, 946 mm from the tail

3.48length over width

396mm wide 12″ from the tail

7,207cm² of planform

Read off the 35.6 L outline · derived

53 %wide point, 960 mm from the tail

3.51length over width

396mm wide 12″ from the tail

7,356cm² of planform

Read off the 37.2 L outline · derived

53 %wide point, 973 mm from the tail

3.53length over width

397mm wide 12″ from the tail

7,505cm² of planform

Read off the 38.8 L outline · derived

53 %wide point, 987 mm from the tail

3.56length over width

398mm wide 12″ from the tail

7,656cm² of planform

Read off the 40.5 L outline · derived

53 %wide point, 1000 mm from the tail

3.59length over width

398mm wide 12″ from the tail

7,808cm² of planform

Read off the 43.4 L outline · derived

53 %wide point, 1027 mm from the tail

3.62length over width

402mm wide 12″ from the tail

8,165cm² of planform

Rocker of the 25.8 L · measured

75 mmtail rocker, at the tip

33 mm12″ from the tail

40 mm12″ from the nose

121 mmnose rocker, at the tip

300 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

81 mmat its thickest, 53 % from the tail · on the photo; Firewire lists 56 mm

22 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 27.7 L · scaled from the 25.8 L measured

78 mmtail rocker, at the tip

36 mm12″ from the tail

43 mm12″ from the nose

125 mmnose rocker, at the tip

304 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

83 mmat its thickest, 53 % from the tail

22 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 29.2 L · scaled from the 25.8 L measured

79 mmtail rocker, at the tip

38 mm12″ from the tail

44 mm12″ from the nose

127 mmnose rocker, at the tip

307 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

86 mmat its thickest, 53 % from the tail

23 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 31.1 L · scaled from the 25.8 L measured

80 mmtail rocker, at the tip

39 mm12″ from the tail

46 mm12″ from the nose

129 mmnose rocker, at the tip

309 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

88 mmat its thickest, 53 % from the tail

23 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 32.5 L · scaled from the 25.8 L measured

81 mmtail rocker, at the tip

40 mm12″ from the tail

48 mm12″ from the nose

131 mmnose rocker, at the tip

311 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

90 mmat its thickest, 53 % from the tail

23 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 34 L · scaled from the 25.8 L measured

82 mmtail rocker, at the tip

42 mm12″ from the tail

50 mm12″ from the nose

133 mmnose rocker, at the tip

313 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

93 mmat its thickest, 53 % from the tail

24 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 35.6 L · scaled from the 25.8 L measured

84 mmtail rocker, at the tip

43 mm12″ from the tail

52 mm12″ from the nose

135 mmnose rocker, at the tip

316 mmflat to within 3 mm, from 42 % to 60 % of the length

50 %of the length to the lowest point, from the tail

95 mmat its thickest, 53 % from the tail

24 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 37.2 L · scaled from the 25.8 L measured

85 mmtail rocker, at the tip

44 mm12″ from the tail

54 mm12″ from the nose

137 mmnose rocker, at the tip

318 mmflat to within 3 mm, from 42 % to 59 % of the length

50 %of the length to the lowest point, from the tail

97 mmat its thickest, 53 % from the tail

24 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 38.8 L · scaled from the 25.8 L measured

86 mmtail rocker, at the tip

46 mm12″ from the tail

56 mm12″ from the nose

139 mmnose rocker, at the tip

320 mmflat to within 3 mm, from 42 % to 59 % of the length

50 %of the length to the lowest point, from the tail

100 mmat its thickest, 53 % from the tail

25 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 40.5 L · scaled from the 25.8 L measured

87 mmtail rocker, at the tip

47 mm12″ from the tail

58 mm12″ from the nose

141 mmnose rocker, at the tip

323 mmflat to within 3 mm, from 42 % to 59 % of the length

50 %of the length to the lowest point, from the tail

102 mmat its thickest, 53 % from the tail

25 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 43.4 L · scaled from the 25.8 L measured

89 mmtail rocker, at the tip

49 mm12″ from the tail

62 mm12″ from the nose

145 mmnose rocker, at the tip

326 mmflat to within 3 mm, from 42 % to 59 % of the length

50 %of the length to the lowest point, from the tail

104 mmat its thickest, 53 % from the tail

26 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 Firewire's photo of the 25.8 L. Tail end set by Firewire's photo convention, not checked by a person.