Zipp Expands Tire Clearance on 202 NSW, 353 NSW, and 303 SW
Zipp announced updated tire clearance for its 202 NSW, 353 NSW, and 303 SW wheelsets, with new maximum widths of 35mm, 49mm, and 55mm respectively. Zipp says existing owners get the upgrade without needing to replace anything.

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Source: Bikerumor