I upgrade my GT Grade Sport with a Microsoft Sword 1X 40T Crankset with Shimano Hollowtech 2 bottom bracket. I also install the WTB Gravelier saddle. Thanks for watching.
Links:
WTB Gravelier Bike Saddle: https://amzn.to/3Oyizdn
Shimano 68mm Hollowtech Bottom Bracket: https://amzn.to/3D4RxaQ
Bottom Bracket Removal Tool: https://amzn.to/3ZtxeNh
Bike Crank Puller: https://amzn.to/49jt26a
Shimano Bottom Bracket Tool: https://amzn.to/49hZ02k
Bicycle Grease: https://amzn.to/3BjfxXg