It appears to be out of stock however here is the official gen 4 riser from ssupd @Newegg: SSUPD Meshlicious Case Accessory - Premium PCIe 4.0 x16 Extension Cable, 140mm GPU Riser Card https://www.newegg.com/ssupd-meshlicious/p/2AM-030R-00012?Item=9SIAS0BE9Y9381&Source=socialshare&cm_mmc=snc-social-_-sr-_-9SIAS0BE9Y9381-_-06032022

Here is the same cable from the same company just not bent.

LINKUP - Ultra PCIe 4.0 X16 Riser Cable [RTX3090 RX6900XT x570 B550 Z690 Tested] Shielded High-Speed Vertical Mount Gaming PCI Express Gen4┃Dual Reverse Connectors {14cm} Compatible with SSUPD case https://www.amazon.com/dp/B092JTTLYF/ref=cm_sw_r_cp_api_i_9MS1A68211VVTZVVNJ18?psc=1