Logitech G27 Appears on Company's Website – GTPlanet
Clixbeetle-GX™ Tactile Feedback Mod For the Logitech G25/G27/G29/G920/ – nolitto3d
3D Printable Shifter knob Logitech G27/G29 by Daan Schuurmans
Amazon.com: Obokidly USB SIM Gear Shifter Knob Adapter Replacement Sim Shift Knobs for Logitech G29 G27 G25 G920 OR for THRUSTMASTER TH8A Shifters (Upgraded Version-Only USB SIM Gear Shifter Knob Adapter) :
VEVOR G920 Racing Steering Wheel Stand Shifter Mount fit for Logitech G27 G25 G29 G920 Gaming Wheel Stand Wheel Pedals NOT Included Racing Wheel Stand - Walmart.com