# Nordic Kayaks Nitro 640

> Surfski by Nordic Kayaks. Canonical page: https://surfskiindex.com/surfskis/nordic-nitro-640/
> Cite as: Nordic Kayaks Nitro 640, Surfski Index, https://surfskiindex.com/surfskis/nordic-nitro-640/ (checked 2026-10-15). Terms: https://surfskiindex.com/using-our-data/

## Specifications
- Length: 6.4 m
- Beam: 43 cm
- Deck height: 33.5 cm (estimated)
- Layup weights: CarbonX 8.5 kg, CarbonLite 9.5 kg, CarbonComp 11.5 kg
- Usually paddled by: Racers

## Ratings (Surfski Index estimates)
- Stability band 4–6 out of 10 (dimension estimate, low confidence).
- Speed rated 10 out of 10.

Modelled from published beam, length and deck height. Low confidence. Speed is our rating. Both are given at the hull's own design weight.

These ratings are Surfski Index estimates, worked out from published dimensions, traced hull shapes where we have them, and reviews. They are not supplied by the maker or timed on the water. How a ski feels depends on your weight, skill, set-up and the conditions, so use them to shortlist skis and paddle one before you buy. Method: https://surfskiindex.com/how-it-works/#limits

Evidence note: This band is estimated from published dimensions. Qualitative context includes 1 paddler report and 5 linked sources.

## Paddler weight
Estimated sweet spot 79–92 kg, broader estimated guide 65–96 kg. An estimate from hull dimensions, not the designer's intended weight.

## Suits
Elite flatwater racing (K1-fast) and open-ocean downwind for paddlers ~65-105kg

## Hull
Full-length 6.40m elite flagship on a 43cm race beam; Nordic states it is as fast as a K1 on flatwater. Very low stability with a long waterline for top-end speed, and strong wave-linking/climbing manners in downwind.

## What works
- K1-fast flatwater speed; the range's top-end hull
- Excellent at connecting and climbing runners downwind
- Very light pre-preg carbon (~8.5-11.5kg)

## Trade-offs
- Lowest stability in the range; elite only
- Long hull is less agile than the 600 in tight swell
- Thin second-hand market in Australia

## Generations
- ~2020-present (2025 refresh): Full-length Nitro flagship on the 43cm race beam; 2025 update added CarbonX and Carbon Light S layups. Longer cockpit fits paddlers 165-200cm+.

## What paddlers say
- Nordic Kayaks copy: the 640 is the longer-cockpit Nitro, a 'top elite surfski designed for maximum speed... as fast as a K1', excelling at connecting and climbing waves downwind (nordickayaks.com / nordickayaksusa.com).

## Sources
- https://nordickayaks.com/boats/surfskis/nitro/
- https://nordickayaksnsw.com.au/products/nordic-nitro
- https://nordickayaksnsw.com.au/products/nordic-nitro-640
- https://shop.prokayaks.com.au/products/nordic-kayaks-nitro-64
- https://nordickayaks.com/kayaks/proline/nitro/

## Prices
Current new prices and dealers: https://surfskiindex.com/surfskis/nordic-nitro-640/#buy