The parts collection
Stems by handlebar clamp and steerer clamp — two safety-critical diameters.
Thomson Elite X4 stem, 31.8 mm bar / 1-1/8" steerer: what it requires from a bike (Handlebar clamp diameter (fitted bar) and Steerer clamp (stem)), what it provides, and its computed verdict on every bike in the Atelier 700 fleet — with the sources we read.
Zipp Service Course SL stem: what it requires from a bike (Handlebar clamp diameter (fitted bar) and Steerer clamp (stem)), what it provides, and its computed verdict on every bike in the Atelier 700 fleet — with the sources we read.
Zipp Service Course stem: what it requires from a bike (Handlebar clamp diameter (fitted bar) and Steerer clamp (stem)), what it provides, and its computed verdict on every bike in the Atelier 700 fleet — with the sources we read.
A replacement stem must clamp the handlebar already on the bike and the steerer it sits on. Both diameters are safety-critical; both are cited on every stem page.
The shop · Atelier 700