# Carbonology Flash X Double (formerly Blast)

> Double by Carbonology. Canonical page: https://surfskiindex.com/surfskis/carbonology-blast-flash-x-double-ss2-/
> Cite as: Carbonology Flash X Double (formerly Blast), Surfski Index, https://surfskiindex.com/surfskis/carbonology-blast-flash-x-double-ss2-/ (checked 2026-10-15). Terms: https://surfskiindex.com/using-our-data/

## Specifications
- Length: 7.4 m
- Beam: 46 cm
- Deck height: 41 cm
- Layup weights: Glass Vacuum 21 kg, Hybrid 19 kg, Carbon 17 kg
- Usually paddled by: Racers

## Ratings (Surfski Index estimates)
- Stability band 5–7 out of 10 (dimension estimate, low confidence).
- Speed rated 9 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 3 linked sources.

## Paddler weight
Carbonology rates this hull for paddlers from 50 kg to 125 kg per seat.

## Suits
Ocean and flatwater racing and downwind for two experienced paddlers.

## Hull
7.42m x 47cm elite tandem hull; long, narrow and low-volume for maximum flat and downwind speed with two strong paddlers. Least stable of the Carbonology doubles, built purely for racing pace.

## What works
- Exceptional top-end double speed
- Long waterline holds runs well
- Multiple layups incl. carbon

## Trade-offs
- Least stable Carbonology double
- Elite crew needed to exploit it
- Big, heavy to handle on land

## Generations
- 2013-: Elite double based on the Flash; marketed by Australian Paddle Sports as 'widely regarded as the fastest double ski in the world'. Also sold as Flash X Double

## What paddlers say
- Australian Paddle Sports lists the Flash X (Blast) double as 'widely regarded as the fastest double ski in the world' (distributor listing)

## Sources
- https://australianpaddlesports.com.au/skis/
- https://www.carbonologysport.com/flash-surfskis/
- https://carbonology.se/models.html

## Prices
Current new prices and dealers: https://surfskiindex.com/surfskis/carbonology-blast-flash-x-double-ss2-/#buy