Promax QR-1 Seatclamp
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 (31.8 size), it’s 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 put the finishing touches on this snazzy
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