Stems
Forged aluminium stems for road, gravel and XC, from 60 to 140 mm. Length and angle place the handlebar; cable routing decides the headset.
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Read length and angle together
A stem does not only move the handlebar forward: it also raises it, depending on its angle and the head angle. With a 71° head angle, the KS Ether Forged and its 6° rise point about 25° above horizontal. Going from 70 to 110 mm therefore moves the handlebar about 36 mm forward and about 17 mm up. A short stem makes the steering livelier; a long one stretches the torso.
Flip it before buying another
The WCS C220 84D fits at +6° or −6°. At 100 mm with a 73° head angle, flipping it raises the handlebar by about 20 mm and brings it about 6 mm closer: a more upright position to try without buying anything. Its clamp wraps the handlebar over 220°, more than half its circumference, and is gentle on it when tightened.
Cables outside or hidden
The WCS Switch hides up to three cables: they run under the stem, then enter the frame through the headset without touching the bearings. It needs the Switch headset and spacers, or an adapter to keep an FSA, Token, ENVE, Acros or standard 1-1/8" headset: everything is in headsets. Its spacers come off without disconnecting a cable, so changing the handlebar height remains a simple adjustment.
Before you order
All three stems clamp a 31.8 mm handlebar on a 1-1/8" steerer, and the C220 also comes in 1-1/4". Check the clamping height on the steerer: 42 mm for the C220, 50 mm for the Switch with its cable guide. Workshop rule: the steerer stops 3 to 5 mm below the top of the stem, so the top cap can compress the headset. On a steerer that is already cut, a taller stem is offset by removing a spacer.
Frequently asked questions
Which stem length should I choose?
The one that leaves you with hands on the hoods, a relaxed back and bent elbows. Start from your current stem and change 10 or 20 mm at a time: a longer stem stretches out your upper body; a shorter one makes the steering livelier.
Can you flip a stem?
Yes, if it has an angle: an 84° stem mounts at +6° or −6°. Flipped, a 100 mm stem raises the bar by about 20 mm on a 73° head angle.
Which stem diameter for my handlebar?
The same as the handlebar's clamping area: 31.8 mm for most road and gravel handlebars, 35 mm for some MTB handlebars. On the fork side, you choose it by steerer diameter, most often 1-1/8", or 28.6 mm.