JP Australia, 2026

GT-S Carbon 2026

4260mm long · 14'0"

740mm wide

196mm thick

309litres

Open in Studio See it on jp-australia.com

Sizes & Numbers

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

In one line

Its width sits further back. A rounded pin tail, a pointed nose and curvy rails.

derived · against the 157 other sup boards in the atlas, read off the outlines.

As listed by JP Australia

JP Australia GT-S Carbon 2026: every size as listed by JP Australia
size	length	width	thickness	weight
287 L	381 cm · 3810 mm	740 mm	203 mm	13 kg
309 L	426 cm · 4260 mm	740 mm	196 mm	14 kg

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

Next to your board?

Lay the JP Australia GT-S Carbon 309 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 287 L outline · derived

28 %wide point, 1067 mm from the tail

5.15length over width

510mm wide 12″ from the tail

21,311cm² of planform

Read off the 309 L outline · derived

28 %wide point, 1193 mm from the tail

5.62length over width

492mm wide 12″ from the tail

24,417cm² of planform

Rocker of the 287 L · scaled from the 309 L, estimated

≈ 64 mmtail rocker, at the tip

≈ 42 mm12″ from the tail

≈ 18 mm12″ from the nose

≈ 54 mmnose rocker, at the tip

≈ 686 mmflat to within 3 mm, from 39 % to 57 % of the length

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

≈ 204 mmat its thickest, 78 % from the tail

≈ 20 mmlonger along the bottom curve than flat

Lay this rocker over other boards

Rocker of the 309 L · estimated

≈ 72 mmtail rocker, at the tip

≈ 50 mm12″ from the tail

≈ 21 mm12″ from the nose

≈ 62 mmnose rocker, at the tip

≈ 722 mmflat to within 3 mm, from 39 % to 56 % of the length

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

≈ 197 mmat its thickest, 78 % from the tail

≈ 23 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 · On JP Australia's photo of the 309 L, whose tail rises 71.6 mm against a nose of 62 mm: its tail end may be the wrong way round. Tail end set by rule. · estimated