SIZE xSmall (13) Small (15) Medium (17) Large (19) xLarge (21) Reach 377.9 402.9 422.9 443.7 463.7 Stack 584.5 584.5 584.5 598.3 598.3 Head Tube Angle 67.5 67.5 67.5 67.5 67.5 Head Tube Length 100.0 100.0 100.0 115.0 115.0 Seat Tube Length 298.6 376.4 427.2 478.0 528.8 BB Drop 30.0 30.0 30.0 30.0 30.0 Wheelbase 1070.5 1095.5 1120.5 1142.0 1162.0 Chainstay Length 416.4 416.4 416.4 416.4 416.4 Top Tube Length, Actual 552.8 570.8 584.7 601.1 621.6 Top Tube Length, Effective 555.0 580.0 605.0 625.0 645.0 Seat Tube Angle 73.0 73.0 73.0 73.0 73.0 Standover Height 738.7 745.2 771.6 796.7 827.7 Fork Length 508.3 508.3 508.3 508.3 508.3 Fork Rake 44.0 44.0 44.0 44.0 44.0