Promax QR-1 Quick Release Seatpost Clamp – 34.9mm 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 action for the life of the clamp without the need for a bushing
  • Laser-etched graphics and stainless steel hardware
    • TECH SPECS
    Color Black
    Defined Color Black
    Diameter 35
    Material Aluminum
    Type Quick Release

    Reviews

    There are no reviews yet.

    Be the first to review “Origin8 Track/SS 170×46 103mm JIS Square Taper crankset black/black”

    Your email address will not be published. Required fields are marked *