I bought these yesterday because my seat base doesn't lean back far enough. I constantly feel like I'm being dumped out the front of my seat. I bought another car and the seats and seating position are so incredibly comfortable and now every time I get into the GX550 I'm disappointed. I'm hoping these make a big difference. I actually googled Lexus GX550 seat mounting spacers and it brought me to someone posting this same link here on LexusGXForum!
Anxingo Driver or Passenger Front Seat Lift Kit Recline Spacer,1/2"-1.5" Recline Kit Lift
https://www.amazon.com/dp/B0B8NDG1LM?tag=lexusgx-20
Anxingo Driver or Passenger Front Seat Lift Kit Recline Spacer,1/2"-1.5" Recline Kit Lift
https://www.amazon.com/dp/B0B8NDG1LM?tag=lexusgx-20