*Technical de
* Top head tube inside diameter : 30mm
*Stem clamp diamter : 25.4mm
*Bottom head tube inside diameter : 30mm
*Crown race seat diameter: 26.4mm, 27mm
*Top stack height : 27.86mm
*Bearings : 2 x angular contact carridge bearings
* Weight : 68grams (include top cap, alloy bolt )
*Colors :black,blue,red,gold,silver,ti,pink,green