Thank you for your interest in this excellent frame with a history of moderate use. There are surface marks and scratches. There is a shallow dent on the non-drive side seat stay as photographed. The drop outs, bottom bracket threads and head tube are in good condition. The FOX rear shock holds air without a record of recent service. Measurements: Seat tube center of bb to collar: 18.5” Top tube center to center actual: 23.5” Head tube: 1-1/8” x 120mm 68 mm bottom bracket 135 mm quick release dropouts