X-SYNC Road Threaded Mount Chainrings Tooth Count:40T Seamlessly moulded EVA foam with

Seamlessly moulded EVA foam with 600 denier polyester construction

but it’s got time of flight sensors to detect your exact position on the treadmill

Starting at the ball of the foot

Fits Zipp 858 and 808NSW

X-SYNC Road Threaded Mount Chainrings Tooth Count:40T Seamlessly moulded EVA foam withDesigned for use with our new RED XPLR AXS power meter, these replacement rings are purpose made for use with a Thread Mount spider design. This chainring mount system allows us to minimize weight, maximize stiffness and accuracy, and retain the ability to swap ring sizes. Available in five sizes to tailor your ride to your needs. Thread Mount design is light, stiff, and accurate Available in 38T, 40T, 42T, 44T, and 46T Compatible with all road