RRD Beluga FL Silver Line Y31 135

Disciplines wing, parawing, downwind, sup

Its slenderness, 3.61, is greater than that of 78% 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 RRD Beluga FL Silver Line Y31 135, closest first.
Brand	Board	Volume L	Δ volume	Length mm	Δ length	Slenderness	Mount
JP Australia	M-Winger 135	135	+0.0%	2,210	+0.5%	3.62 (+0.5%)	twin-track

Every figure is RRD'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	Beluga FL
Model	Beluga FL Silver Line Y31
Size, as the brand prints it	135
Volume, L	135
Length, mm	2,200 (7'3")
Width, mm	610
Thickness, mm	—
Weight, kg	7.26
Slenderness (length ÷ width)	3.61
Slenderness band	3.0–4.0
Mount	—
Strap inserts	yes
Build	—
Construction	SILVER Line: precision-molded Super EPS core (18 kg/m3), Hexagonal Innegra Carbon deck (176 g/m2), 160 g/m2 S-Glass bottom
Disciplines	wing, parawing, downwind, sup
Rider weight	—
Rider level	—
Model year	—
Source	manufacturer · read 2026-10-02

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