Barely ridden 2018 Mercier Nano mini velo (from Bikes Direct)- frame size is 53cm (M/L). Upgrades include: Kalloy Allrounder flat bar, Ergon GC1 grips, Shimano Sora brake levers, Zoom HE -17 degree quill stem, Shimano 8-speed 11-32t cassette, and Brooks Cambium C15 saddle. Bike is in like new...