Updated Zipp 404 and 454 NSW optimised for speed in the real-world – not the wind tunnel

The focus is on “Total System Efficiency” to better overcome the more variable and unpredictable conditions experienced outdoors, compared to the wind tunnel

Zipp 454 NSW
(Image credit: Zipp)

Zipp has rolled out its updated rim manufacturing techniques to its deeper section carbon offerings, with some huge weight savings as a result – up to a claimed 400g on a whole wheelset. The testing of the wheels has also seen a revamp, being carried out in the real-world with a rider and bike system of 85kg riding at a much more attainable output of around 280w.

Just as we saw on the shallower 303 wheels released in May 2020, the move to a hookless rim profile has not only reduced the weight but it has also simplified the manufacturing process. This in turn reduces the costs of producing the wheel – which are then passed on – as well as reducing the amount of waste created.

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Stefan Abram
Tech features editor

After winning the 2019 National Single-Speed Cross-Country Mountain Biking Championships and claiming the plushie unicorn (true story), Stefan swapped the flat-bars for drop-bars and has never looked back. 

Since then, he’s earnt his 2ⁿᵈ cat racing licence in his first season racing as a third, completed the South Downs Double in under 20 hours and Everested in under 12.

But his favourite rides are multiday bikepacking trips, with all the huge amount of cycling tech and long days spent exploring new roads and trails - as well as histories and cultures. Most recently, he’s spent two weeks riding from Budapest into the mountains of Slovakia

Height: 177cm

Weight: 67–69kg