SRAM X-Sync Chainring 42T 110mm BCD Black BB30 or GXP BB30 or GXP – The Bike Hub
Sram Rival AXS XPLR 1x12 Speed X-SYNC Direct Mount Chainring 42T Black 8 bolts 710845866760 | eBay
Amazon.com : SRAM 42T 130mm Black Chainring use w/ Traditional or 10 or 11 Speed Yaw 54 or 55 Outer Ring : Bike Chainrings And Accessories : Sports & Outdoors