Rear lenticular wheel Zipp Super 9 Tubeless Ready SRAM XDR

The Zipp Super 9 Tubeless Ready SRAM XDR rear disc wheel is a top-notch addition to your modern triathlon and time trial bike. Its refined shape is wide and parallel from the hub until it tapers inward when it meets the tire bed without hooks. Thanks to Zipp's carbon laminate and Total System Efficiency (TSE) design, the Super-9 is tailored for a new era of wider tires and lower tire pressure in TT and triathlon. Zipp's TSE approach to wheel design is based on a simple premise: Efficiency equals speed, perfect pavement or not.By combining Zipp's wheel laminate with a wider rim profile and an optimized tire interface, the four barriers to speed are overcome: wind resistance, gravity, rolling resistance, and vibration losses. Guided by TSE, Zipp redesigned the Super-9 from the rim-tire interface to its ceramic bearings. The result is less wasted effort for you.