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Rotor expands into the lightweight component market with its new S1 stem. (Image credit: James Huang)
Rotor's DTT bolts make it all possible. (Image credit: James Huang)
The two-bolt faceplate is particularly sleek(Image credit: James Huang)
The S1's beefy extension makes for a stiff feel. (Image credit: James Huang)
DTT bolts are also used for the steerer clamp. (Image credit: James Huang)
Red or black: your choice. (Image credit: Rotor)
Rotor made a name for itself with its eponymous cranks and elliptical
The DTT bolts resemble basic set screws except that each end uses
One thing is for certain: our Rotor S1 sample stem is seriously
Inexperienced mechanics will want to take some care during installation,
Otherwise, Rotor's new S1 has emerged as one of our favorite ultralight
