... .8/34.9 x 0.9mmround tubeChain stayOD19/22.2 x 0.9mmoval tubeSeat stayOD16/19 x ... frames (MTB, triathlon, track, BMX, cyclocross etc. ), titanium bicycle parts (handlebar, clamp, stems, seat posts, fork, spacer, ... headset etc. ) and titanium material for bicycle manufacturing (Gr.9/Gr.5 titanium tubing, rods, sheet, ... more product information, pelase contact us. Titanium Road Bicycle Frame