Titanium Bicycle Stem 31.8 ... /110/120mm 4.Weight:160-190g Titanium Bicycle Stem 31.81. Material: 3Al/2. ... road, triathlon, track, BMX, cycloss 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, ... product information, pelase contact us. Titanium Bicycle Stem 31.8mm x 70/80/90/100 ...