String spokes in an ultralight package that is a blast to ride: the Berd Sparrow Gravel Wheelset reviewed

Berd impressed with its unconventional yet exceptionally light, uncommonly smooth and aero-be-damned gravel wheelset

Berd Sparrow Carbon Gravel Wheelset uses string spokes!
(Image credit: Sean Coffey)
Cycling Weekly Verdict

An exceptionally light, uncommonly smooth, aero-be-damned gravel wheelset that makes a lot of sense for gravel riding

Reasons to buy
  • +

    Very light

  • +

    Fibrous spokes dull sharp edges and dampen vibration

  • +

    Competitively priced for what they offer

  • +

Reasons to avoid
  • -

    Slower in the wind compared to deeper rim/bladed steel spoke wheels

  • -

    No Campy option

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

The first thing you’ll notice about any of the Berd wheelsets is that the spokes are strings. Floppy as a shoelace when not built into a wheel, rigid like metal when in use. 

Berd’s PolyLight spokes may not feel particularly technical at first glance, but there’s more than meets the eye. Their fibrous material is an ultra-high molecular weight polyethylene, also known as Dyneema®, and it brings impressive claims: 

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