SRAM AXS 1x X-Sync Asymmetric 4-Bolt Chainring Size:40t (Polar Gray) even on long descents or

even on long descents or at an extremely aggressive riding style

highly water resistant and durable materials

Spare axle for Zipp 76 and 77 front wheel hub (rim brake)

trainer compatible with 8

SRAM AXS 1x X-Sync Asymmetric 4-Bolt Chainring Size:40t (Polar Gray) even on long descents orSRAM AXS 1x X Sync Asymmetric 4 Bolt Chainring Specifications Application: Road Attachment: 107 mm bolt circle diameter, 4 arm Teeth: 36 t, 38 t, 40 t, 42 t, 44 t, 46 t Gearing: 1x12 speed Material: Aluminium Technology: X Range for more range and smoother gear changes Chainring tech: X Sync for maximum chain control with wide and narrow teeth Finish: Durable laser etched chainring finish Installation: Can be installed with a single tool Mfr Claimed