Litespeed Owl Hollow MTS Frame Size Center-to-Top Top Tube Head Seat Chainstay B/B Height Wheelbase Front Center Fork Rake Stand Over Head Tube Weight 15 21.75 71.0 73 17 13 41.4 24.4 1.6 28.2 4.1 5.66 17 22.25 71.5 73 17 13 41.8 24.8 1.6 29.9 4.1 5.70 18 22.75 71.5 73 17 13 42.4 25.4 1.6 30.8 4.5 5.78 19 23.25 71.5 73 17 13 42.9 25.9 1.6 31.6 5.0 5.84 21 24.25 71.5 73 17 13 43.9 26.9 1.6 33.3 6.0 6.00