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Carbonology · Double

Carbonology Zest X Double

A 7.25 m x 50 cm double on a 38 cm deck, two centimetres narrower and slightly longer than the Boost X double. Buckets are 42.5 cm wide and 20 cm deep. The ergonomic changes over the Boost double are aimed at letting a crew hold technique and run waves rather than simply stay upright.

Length
7.25 m
Beam
50 cm
Deck
38 cm
Lightest
16 kg
Source image flipped
Source image flipped
Carbonology Zest X Double, studio side profile
studio side profile · carbonologysport.com

Specifications

Length
7.25 m
Beam
50 cm
Deck height
38 cm
Category
Double
Usually paddled by
Paddlers in chop
New price
A$4,000

Layup weights

Glass Vacuum23 kg
Hybrid20 kg
Carbon17 kg
Carbon/Aramid Honeycomb16 kg

On-water profile

Stability
6–8
Dimension estimateLow confidence
Speed
8

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. How we rate.

Stability here means how steady the ski feels sitting still on flat water. Where two craft have overlapping ranges, we can't say which is more stable. Downwind handling is a separate thing, covered in the evidence note below.

Evidence note

This band is estimated from published dimensions. Qualitative context includes 3 linked sources.

Suits: Ocean racing and downwind for a competent crew who want a fast double without committing to the 46 cm Flash X.

Paddler weight

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

The maker’s published range. How this is worked out.

Generations

2023-

The intermediate double in the X range, introduced alongside the Cruze X RT and Flash X LV as one of the "new arrivals" in the 2023 catalogue.

Pros and cons

Pros

  • Real step up in speed over the Boost X double for A$0 more at the base layup
  • Deeper layup ladder than the other doubles, down to 16 kg
  • Still forgiving enough for a mixed-ability crew who can brace

Cons

  • 7.25 m and 50 cm asks more of the back crew than the Boost double
  • Longest hull in the range to store and transport
  • No published review or owner report

Where to buy

Carbonology Sport ↗

Dealers:

Ocean Paddler · AU ↗Australian Paddle Sports · AU ↗Ocean Paddlesports · AU ↗PaddleZone · AU ↗

Australian Paddle Sports 2026: Glass Epoxy Vacuum (23 kg) A$4,000, Hybrid (20 kg) A$4,600, Carbon Foam Epoxy Vacuum (17 kg) A$5,000, Carbon/Aramid/Foam/Honeycomb (16 kg) A$5,500.

Sources

BetaRatings are estimatesRatings are estimates. How we get the numbers. Prices checked October 2026, may be out of date.