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Zipp SL Speed Carbon Stem

$265.00

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  • Matte Black, 100mm/-6deg
    $265.00
  • Matte Black, 110mm/-6deg
    $265.00
  • Matte Black, 120mm/-6deg
    $265.00
  • Matte Black, 70mm/-6deg
    $265.00
  • Matte Black, 80mm/-6deg
    $265.00
  • Matte Black, 90mm/-6deg
    $265.00

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Perfect marriage of lightweight and stiffness.

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.

  • 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
123g
Recommended Use
road
Manufacturer Warranty
2 years

Tech Specs

What do you think about this product?

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>Rating: 5

Premium stem at a premium price

Familiarity:
I've used it once or twice and have initial impressions

There's really not much more to it in person than you can see online. It's wider, a little more square, and for the true weight weenie, 13g grams lighter than the aluminum SL speed stem (comparing 110mm version of each). Photo shows the 110m carbon SL speed stem, weighing in at 127g versus 140 for the aluminum version (both are nice). I did not get out the calipers but side-by-side the stack height of the aluminum and carbon versions appears identical. The matte black finish matches the matte black version of Zipp bars and Zipp SL speed post. The visible layer of carbon fiber has a random orientation (neither unidirectional nor a weave). No stem cap (top cap) is included. It is a pricey stem, and no rational reason to upgrade other than you just want a matching carbon stem and are willing to pay the price.

There's
>Rating: 5

Knee saver

Familiarity:
I've used it once or twice and have initial impressions

This stem is a work of art. What sets it apart for me is the smooth steerer-tube bolt profile. If you've ever hit your knee on an exposed or non-integrated steerer bolt during a sprint or crash, you'll know what I'm talking about. It seems very stiff; and if it can handle van Aert's cyclocross use, I don't see why it shouldn't be amply durable for cross country mountain biking for an average or lighter rider.

>Rating: 5

Rock Solid And Looks Killer

Familiarity:
I've put it through the wringer

Added to my 2017 S-Works Tarmac eTap. Great stem. Stiff but still dampens some road chatter. It look completely pro. Beefy and sleek at the same time.

>Rating: 5

Perfection

This is the *new* Zipp SL Speed carbon stem (with new stealth graphics). Zipp, undeniably, one of the very best carbon road wheelset makers​ in the world... has quietly become one of the very best makers of carbon cockpit components. The SL Speed carbon stem is expensive. It is strong. It is light (Zipp says 123g in size 100mm). It is also stunnigly beautiful in stealth matte carbon black (and will match any frame color) American company/design. Cool. By the way, Zipp uses Torx fasteners because they are "simply a better bolt." As Zipp explains, "They are more durable (strip less). And they provide more accurate torque readings." Install note: This stem is a work of art, please use a quality torque wrench (or one of Park's excellent new torque keys @ $45) to tighten the bolts (cross X) to spec (6 Nm max). If you have a carbon bar, add a swipe of grip paste ( I rec Finish Line Fiber Paste, $7/tube). Don't over tighten. And you don't need to if you use a torque key and grip paste.

One of my Zipp stem bolts sheared the other day when tightening within spec. Aluminum version of the SL stem but same bolts as on the carbon SL stem. Just saying. The bolts are good but not indestructible.

>Rating:

Will this stem fit a cervelo s5 aero handlebar?

I am thinking the same thing. Did you get an answer?