Sequential shifter mod for LOGITECH shifters. G25, G27, G923 etc,. Sequential, Handbrake, H-pat. - YouTube
Logitech Sequential Shifter Mod Black Carbon Fibre – RaceCrafts
Amazon.com: Obokidly DIY Sequential Shifter Knob mod Upgrade Modification Steering Wheels Accessories Parts Set for Logitech Shifter Gear Shift Knob for G29/G25/G27 for PXN A10 Compatible with PC for ATS & ETS2
Logitech Shifter Sequential Adapter Mod for G923 G29 G920 G27 G25 | eBay