Fast Bobby · Foilboards · Armstrong · discontinued

Armstrong Midlength FG 65L 5'9

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Build hard Disciplines prone, wing discontinued

The Midlength FG has 7 sizes on record, discontinued sizes included, from 38 to 100 L. Its slenderness, 3.63, is greater than that of 79% 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 Midlength FG 65L 5'9, closest first.
BrandBoardVolume LΔ volumeLength mmΔ lengthSlendernessMount
F4 FoilsEmona Parawing Board 65L 5'8.5" x 18.7" 4.7"65+0.0%1,740-0.7%3.66 (+0.9%)plate, tuttle
AppletreeMidlength V2 5'10'' (67L)67+3.1%1,778+1.4%3.68 (+1.4%)twin-track
F4 FoilsJulitta Mid-Length Board 65L 5'10" x 19.3" 4.8"65+0.0%1,778+1.4%3.63 (-0.0%)—
F4 FoilsJulitta Board 65L 5'10.4" x 19.3" 4.8"65+0.0%1,788+2.0%3.65 (+0.5%)—

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.
FamilyMidlength
ModelMidlength FG
Size, as the brand prints it65L 5'9
Volume, L65
Length, mm1,753 (5'9")
Width, mm483
Thickness, mm114
Weight, kg—
Slenderness (length ÷ width)3.63
Slenderness band3.0–4.0
Mount—
Strap inserts—
Buildhard
Constructiondual i-beam carbon stringers, carbon fiber foil tracks
Disciplinesprone, wing
Rider weight—
Rider level—
Model yeardiscontinued
Sourcemanufacturer · read 2026-10-02

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

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