SAPIM Titanium washers. The Spoke nipples are laced with SAPIM titanium Washers making this one strong set of wheels. SAPIM CX-RAY Aero. Zipp 454 NSW wheel DT Swiss Hub Sound. We have taken a standard 454 wheelset and replaced the underperforming parts IE the spokes and hubs and given the rims performance hubs & spokes that match the performance of the rims.
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