On my previous GS500, I had purchased an add-on rear grip seat cover that was super cool. Are these still available? Tribo seat cover I believe.
I had one of those on my stock seat before upgrading to a Top Sellerie seat. Was good for the passenger when stopping quick and also helped keep items in place when using a bungie net.
Tribo Seat is still in business and selling the GS500 covers. You can buy from them off ebay or direct:
https://www.triboseat.com/product-category/home-suzuki/home-suzuki-gs-500/ (https://www.triboseat.com/product-category/home-suzuki/home-suzuki-gs-500/)
(https://www.triboseat.com/wp-content/uploads/2018/08/Triboseat-Suzuki-GS-500F-2001-2013-287-pekm300x200ekm.jpg)