Lynskey M290 Mountain Bike Frame Titanium 29er NEW. Size Medium Seat Tube: 16.75 C-T Top Tube: 23” 44mm Headtube Seatpost: 27.2mm BB: 73mm Post Mount disc brake attachment Non-Boost rear spacing 12 x 142mm rear axle included From Lynskey: Industrial Mill Finish is low maintenance and durable Etched graphics are subtle and life-long Certified 3Al-2.5V titanium tubeset Massive 2 inch diameter downtube adds strength, stiffness, and excellent energy transfer 12 x 142 rear end enhances power transfer and quick handling Replaceable rear derailleur hanger Headtube Design 44mm straight accepts both straight and tapered steerer tubes Recommended Fork Travel 100mm to 120mm Bottom Bracket Type 73mm standard threaded Seatpost Diameter 27.2 mm Front Derailleur Clamp Size 34.9 mm Wheel Size 29 inch Maximum Tire Size 2.4 inch width Axle DT Swiss Flat Lock 12 x 142 Thru Axle Rear Spacing 142