Wilier Zero SLR Shimano Dura-Ace Di2 Disc Road Bike 2021, Size XXL Posted December 22, 2023 Wilier Zero SLR Shimano Dura-Ace Di2 Disc Road Bike 2021, Size XXLView our in-depth size guide. Size GuideExtra Large (6’3 and above). TyresSchwalbe Pro One, 25c/28c.