ALLOY 30.9

 Box One Zero Offset Seatposts are 3D-forged from heat-treated 2014-T651 Aluminum for exceptional strength A proven, two bolt clamp design provides a stable and secure connection with your saddle, and an anodized finish and laser etched graphics give these seatposts a touch of style that would make an elegant addition to any bike Chromoly hardware 30.9mm 400mm Blk 2014-T651AL 0mm 297g ...

 Lightweight tubing made from 2014 aluminum alloy and a cold forged, aluminum alloy head give the box two seatpost a superb strength to weight ratio The two-bolt head design ensures solid seat positioning and plenty of adjustability Each post has 20 millimeters of setback and 26 degrees of seat angle adjustment 30.9mm 400mm Blk 2014AL 20mm 285g

 AL6061-T6 w/ 3D forged head HRT graphics ~ 270g 30.9mm 350mm Blk Aly 0 270g

 Aluminum construction Double bolt clamp 30.9mm 400mm Blk AL6061-T6 0mm

 Forged AL6061-T6 alloy construction Micro-adjust 2 bolt hinged clamp design Extra long 400mm post 0mm setback 30.9mm 400mm Sil AL6061-T6 0mm 326g

 Forged AL6061-T6 alloy construction Micro-adjust 2 bolt hinged clamp design Extra long 400mm post 0mm setback 30.9mm 400mm Blk AL6061-T6 0mm 326g

 3D forged one-piece AL7050-T6 construction Wide saddle clamp design reduces rail stress and flex Micro-adjust 2 bolt clamp design 15mm setback ISO-Mountain safety certified 30.9mm 350mm Blk AL7050 15mm

 3D forged one-piece AL6061-T6 construction Wide saddle clamp design reduces rail stress and flex Micro-adjust 2 bolt clamp design 15mm setback ISO-Mountain safety certified 30.9mm 350mm Blk AL6061 15mm

 Forged alloy construction Integrated index adjust seat clamp Weight: 325g 30.9mm 350mm Blk Aly 25mm 357g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 410mm Blk Aly 0mm 263g

 Made in the U.S.A. Post and cradle are machined from 1- piece of 7000 series aluminum 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts 30.9mm 367mm Blk Aly 0mm 243g

 Made in the U.S.A. 41mm seat rail grip length 40% stronger on ultimate strength test than competitor posts Approximately 40 grams lighter than the same size Elite post Ellipse bore inside tube for optimum strength to weight ratio. 30.9mm 350mm Blk Aly 0mm 192g