what size is specialized l
1 S: Bike size 14-16in: generally for riders between 5ft 4in and 5ft 7in. 2  M: Bike size 16-18in: generally for riders between 5ft 7in and 5ft 10in. 3  L: Bike size 18-20in: generally for riders between 5ft 10in and 6ft 1in. 4  XL: Bike size 20-22in: generally for riders over 6ft 1in.