Firewire Boss Up 2025
Surf › Rounded pin tail
Firewire, 2024
1626mm long · 5'4"
479mm wide
59mm thick
24.9litres
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
| size | length | width | thickness | weight | price |
|---|---|---|---|---|---|
| 24.9 L | 5'4" · 1626 mm | 479 mm | 59 mm | – | |
| 26.2 L | 5'5" · 1651 mm | 483 mm | 60 mm | – | |
| 27.6 L | 5'6" · 1676 mm | 487 mm | 62 mm | – | |
| 28.1 L | 5'7" · 1702 mm | 487 mm | 64 mm | – | |
| 29.2 L | 5'8" · 1727 mm | 491 mm | 64 mm | – | |
| 30.1 L | 5'9" · 1753 mm | 492 mm | 65 mm | – | |
| 31.4 L | 5'10" · 1778 mm | 495 mm | 67 mm | – | |
| 33.0 L | 5'11" · 1803 mm | 499 mm | 68 mm | – | |
| 34.5 L | 6'0" · 1829 mm | 502 mm | 70 mm | – | |
| 36.5 L | 6'2" · 1880 mm | 505 mm | 71 mm | – | |
| 37.7 L | 6'4" · 1930 mm | 508 mm | 71 mm | – |
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
The Firewire S Boss 2024 size each rider would pick, by weight and level
75 kg · getting there · look for 33.8–41.3 L
The S Boss 37.7 L
3 sizes fall in your range; the 37.7 L is nearest its middle.
A rule of thumb (0.45 to 0.55 L per kg you weigh), not Firewire’s chart
| level | 60 kg | 75 kg | 90 kg | 105 kg |
|---|---|---|---|---|
| First sessions0.6 to 0.9 L per kg you weigh | 37.7 L | too small | too small | too small |
| Getting there0.45 to 0.55 L per kg you weigh | 30.1 L | 37.7 L | 37.7 L · small | too small |
| Confident0.38 to 0.45 L per kg you weigh | 24.9 L | 31.4 L | 37.7 L | 37.7 L · small |
| Expert0.33 to 0.38 L per kg you weigh | 24.9 L · big | 26.2 L | 31.4 L | 37.7 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
From above, then from the side, true scale · the chosen size solid, the others dashed
Read off the 24.9 L outline · derived
50 %wide point, 815 mm from the tail
3.39length over width
388mm wide 12″ from the tail
6,204cm² of planform
Read off the 26.2 L outline · derived
50 %wide point, 827 mm from the tail
3.42length over width
389mm wide 12″ from the tail
6,343cm² of planform
Read off the 27.6 L outline · derived
50 %wide point, 840 mm from the tail
3.44length over width
390mm wide 12″ from the tail
6,505cm² of planform
Read off the 28.1 L outline · derived
50 %wide point, 853 mm from the tail
3.49length over width
388mm wide 12″ from the tail
6,603cm² of planform
Read off the 29.2 L outline · derived
50 %wide point, 866 mm from the tail
3.52length over width
388mm wide 12″ from the tail
6,745cm² of planform
Read off the 30.1 L outline · derived
50 %wide point, 878 mm from the tail
3.56length over width
388mm wide 12″ from the tail
6,866cm² of planform
Read off the 31.4 L outline · derived
50 %wide point, 891 mm from the tail
3.59length over width
388mm wide 12″ from the tail
7,011cm² of planform
Read off the 33.0 L outline · derived
50 %wide point, 904 mm from the tail
3.62length over width
388mm wide 12″ from the tail
7,157cm² of planform
Read off the 34.5 L outline · derived
50 %wide point, 916 mm from the tail
3.65length over width
389mm wide 12″ from the tail
7,303cm² of planform
Read off the 36.5 L outline · derived
50 %wide point, 942 mm from the tail
3.72length over width
387mm wide 12″ from the tail
7,554cm² of planform
Read off the 37.7 L outline · derived
50 %wide point, 967 mm from the tail
3.80length over width
385mm wide 12″ from the tail
7,807cm² of planform
Rocker of the 24.9 L · measured
Rocker of the 26.2 L · scaled from the 24.9 L measured
Rocker of the 27.6 L · scaled from the 24.9 L measured
Rocker of the 28.1 L · scaled from the 24.9 L measured
Rocker of the 29.2 L · scaled from the 24.9 L measured
Rocker of the 30.1 L · scaled from the 24.9 L measured
Rocker of the 31.4 L · scaled from the 24.9 L measured
Rocker of the 33.0 L · scaled from the 24.9 L measured
Rocker of the 34.5 L · scaled from the 24.9 L measured
Rocker of the 36.5 L · scaled from the 24.9 L measured
Rocker of the 37.7 L · scaled from the 24.9 L measured
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 24.9 L. Tail end set by Firewire's photo convention, not checked by a person.
Closest outlines from other models, same sport first, once stretched to one length and width · derived
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Surf › Rounded pin tail
Wake › Wakesurf