This specially engineered aero seat clamp suits Columbus Altec 2 + crono seat tubes. With 3 separate pieces to independantly slide on each other, this clamp will hold your seat post tight. We suggest you use with Columbus XLR8R carbon seat post. Available  Product Details...

$85.19

Columbus XLR8R seat post with anti-compression channel. available in 27.2 or 31.6mm diameters.  Product Details...

$284.16

Double allen key and splined, For traditional frames, Chrome plated  Product Details...

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Seat bolt allen key 5mm.  Product Details...

$5.44

seat clamp rotating nut 28.6mm black. This clamp allows you to tighten the bolt without it bending and breaking. simple but a great idea.  Product Details...

$20.00

X Carbon seat clamp Available in: * 31.8mm * 34.8mm Designed for use with Carbon or alloy seat posts. The specially designed sleeve can be dialed to suit carbon or alloy posts. this will help creating a stress area for a ptential beakage o  Product Details...

$37.16