Promax QR-1 Seatpost Clamp - 31.8mm QR Black MFPN=11.4015.547.160 One piece continuous carbon fiber

One piece continuous carbon fiber construction

4" compound Race Formulation Graphene + Silica bead folding type tubeless color black weight 740g

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ISO Diameter 622 / Road / 29" ISO Width (mm) 54 ISO Width (mm) 55 ISO Width (mm) 56 ISO Width (mm) 57 ISO Width (mm) 58 ISO Width (mm) 59 ISO Width (mm) 60 ISO Width (mm) 61 ISO Width (mm) 62 Labeled Size 29 x 2

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Promax QR-1 Seatpost Clamp - 31.8mm QR Black MFPN=11.4015.547.160 One piece continuous carbon fiberPromax QR 1 Quick Release Seatpost Clamp 31. 8mm Black. QR 1 seatpost clamps are cold forged and CNC machined from 6061 T6 aluminum alloy. The QR 1 as the name implies has a quick release lever making seat height adjustments a snap. Weighing just 30 grams 1. 1 ounces in the 31. 8 size its as lightweight as it is tough. The head of the lever and the face of the clamp are given a proprietary low friction surface treatment that ensures smooth lever