Improve the feel of the Logitech G27 Shifter - YouTube
Shifter Adapter for Logitech G25, G27, G29, G920 : Leo Bodnar Electronics
Amazon.com: XBERSTAR Shifter for Logitech g25 g27 g29 Pedal to USB/Adapter/Converter/Adapter Cable/Logitech Pedal to USB (for Logitech G29 G27 G25 pedał) : Video Games
LOGITECH G25 DRIVING FORCE RACING WHEEL / PEDALS / SHIFTER E-UP15 WORKING – St. John's Institute (Hua Ming)