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Zipp
SL Speed Carbon Stem

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SL Speed Carbon Stem

Zipp doesn't hesitate to extend their craftiness beyond their signature aerodynamic wheels. This SL Speed Carbon Stem is a prime example of Zipp's quest to reshape bike componentry from the bottom up. The most notable aspect of this stem is its ethereal lightness. Zipp uses exacting construction standards and some forward thinking to maintain the same top-notch level of performance and durability you'd find on their other go-fast products, without sacrificing lightness.


The SL Speed Carbon Stem has rearward facing stem bolts, similar to what we've seen on Oval stems in the past. On Zipp's design, the bolts thread directly into a two-piece carbon/titanium faceplate. On the backside, the single-bolt steerer clamp appears standard in every way, but Zipp found, through product testing, that normal fasteners don't always seat properly in their bores when the clamp is torqued to spec onto the fork steerer tube. To fix this, they added self-aligning washers to ensure positive contact between the stem and the shoulders of the fasteners, which also enables the construction to be completely carbon. The Zipp SL Speed Carbon Stem uses uni-directional carbon fiber, laminated in such a way as to have exceptional torsional stiffness to resist twisting when you're really cranking on the bars in a sprint or uphill.


Details

  • Stiff, secure, and ultralight stem for road or gravel
  • Unidirectional carbon is seriously stiff and tough
  • Light enough for roadies, tough enough for cyclocross
  • Torx T25 heads for precise torque readings
  • T25 wrench included for easy adjustability
  • Item #ZIP005M
Material
unidirectional carbon
Rise
6-degrees
Clamp Diameter
31.8mm
Steer Tube Diameter
11/8in
Stack
41mm
Bar Attachment
titanium with Torx T25 heads
Claimed Weight
4.3oz (123g)
Recommended Use
road
Manufacturer Warranty
2 years

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