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Armstrong Downwind FG 140L 8'5

Discontinuedsuperseded or no longer in the brand’s current range
140volume, L
2,565length, mm
540width, mm
4.75slenderness

Build hard Disciplines downwind discontinued

The Downwind FG has 5 sizes on record, discontinued sizes included, from 96 to 140 L. Its slenderness, 4.75, is greater than that of 92% of the 1,895 current boards that publish a length and a width.

Closest boards from other brands

Mount is shown beside each board, never matched on.

Current boards from other brands within ±7% of volume and ±2% of length, and ±2% of slenderness where both publish a width of the Armstrong Downwind FG 140L 8'5, closest first.
Brand	Board	Volume L	Δ volume	Length mm	Δ length	Slenderness	Mount
Loco Surfing	Loco Downwind Hydrofoil Board 8'6''	145	+3.6%	2,591	+1.0%	—	—

Specifications

Every figure is Armstrong's own, read from the source linked in the last row, converted to millimetres and kilograms where the brand prints inches or pounds. Slenderness is computed here, length ÷ width.
Family	Downwind
Model	Downwind FG
Size, as the brand prints it	140L 8'5
Volume, L	140
Length, mm	2,565 (8'5")
Width, mm	540
Thickness, mm	152
Weight, kg	7.7
Slenderness (length ÷ width)	4.75
Slenderness band	4.0–5.0
Mount	—
Strap inserts	—
Build	hard
Construction	dual i-beam carbon stringers, carbon fiber foil tracks
Disciplines	downwind
Rider weight	—
Rider level	—
Model year	discontinued
Source	manufacturer · read 2026-10-02

Every figure above is the manufacturer's published claim, converted to comparable units.

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