KayakCarts.net

Suspenz

All-Terrain Super Duty Airless Cart

heavy-duty platform cart Suspenz DLX Super Duty

A high-capacity option at 159 kg with large 38 cm airless wheels. The important caveat is the frame material: powder-coated steel. Suspenz themselves recommend applying a corrosion protectant, which tells you what you need to know about salt use.

Planning capacity

159 kg

(350 lb)

Cart mass

7.7 kg

Packs into the boat

Yes

Folds

Hull fit

Cross-section showing how the Suspenz All-Terrain Super Duty Airless Cart supports a shallow-v hull
How this class of cart carries the boat, shown with a shallow-v hull. Illustrative cross-section of the support mechanism — not a scale drawing of this product, and no dimension should be read from it.
Cradle style
Adjustable-width padded platform
Pad type
Padded bunks
Width adjustment

Adjustable, but no range published.

22.9–50.8 cm (9–20 in)
Mfr confirmed— evidence level: The figure or fit statement is published by the manufacturer of the kayak or the cart, in their own documentation, spec sheet or support channel.
Scupper cart
No

Suits these hull shapes

  • Flat / near-flat bottom
  • Shallow-V
  • Rounded / displacement
  • Hard-chined
  • Tunnel hull
  • Pontoon / catamaran (twin sponson)

Poor match

None recorded

Wheels and terrain

38 cm (15 in) airless wheels

Airless
Diameter
38.1 cm
Tyre width
Not published

Large diameter rolls over roots and kerbs well. Diameter is not the same as width — this is still not a sand wheel.

Terrain scores, best wheel option
Surface Score, best wheel available
Sealed car park / boat ramp 5/5
Hard-packed dirt track 5/5
Grass / turf 5/5
Gravel or shingle 4/5
Wet / firm sand 3/5
Deep dry soft sand 2/5
Mud / tidal flat 2/5
Steps or a steep bank 4/5

Judgement scale, not instrumented testing. Read the scale definitions.

Build and saltwater

Frame material
Powder-coated steel
Mfr confirmed— evidence level: The figure or fit statement is published by the manufacturer of the kayak or the cart, in their own documentation, spec sheet or support channel.
Corrodible structural parts
The frame itself. Steel under powder coat — any chip is a rust start point.
Saltwater rating

Powder-coated steel frame. The manufacturer recommends applying a corrosion protectant, which is an admission that salt is a problem. If you launch in salt, rinse thoroughly every single time, or choose an aluminium or composite cart instead.

poor
Mfr confirmed— evidence level: The figure or fit statement is published by the manufacturer of the kayak or the cart, in their own documentation, spec sheet or support channel.
Packed size
Not published
Disassembly
Not published
Replacement parts

Suspenz supply replacement wheels and hardware; availability outside the US is patchier.

moderate
Inferred— evidence level: No direct fit report exists. Our published rules engine compared measured cart geometry and capacity against measured kayak geometry and loaded weight. Geometry is not the same as a real-world fit.
Origin
United States
Price band

Checked 2026-08.

$$$

Documented failure modes

What owners actually report going wrong, with an evidence grade on each. This section exists because most reviews omit it.

Steel frame in a saltwater sport

high severity Mfr confirmed— evidence level: The figure or fit statement is published by the manufacturer of the kayak or the cart, in their own documentation, spec sheet or support channel.

The single biggest reason to think twice about this cart. Freshwater use, no issue. Salt use, plan on maintenance.

Heaviest cart here at 7.7 kg

low severity Mfr confirmed— evidence level: The figure or fit statement is published by the manufacturer of the kayak or the cart, in their own documentation, spec sheet or support channel.

Noticeable if you carry the cart in the boat or walk it back to the car.

How it pairs with kayaks we hold

Evaluated on hard-packed ground with no extra gear — a deliberately generous baseline. Add your real gear load in the finder and some of these will change.

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Sources last checked:
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