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Item # ZIP0110

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Item # ZIP0110

Why pay more?

When Zipp unveiled their alloy 101 wheelset they quickly learned of the hunger in the marketplace for uber-engineered aluminum components. If it wasn't their hottest-ever product unveiling, it was up there. Given that, up until recently, Zipp worked exclusively with carbon fiber, they were perhaps less attuned than some to the fact that most folks aren't opposed to aluminum as a material, but just need a compelling reason to pick it over carbon. With their Service Course line of components — all of it borne from their infamous engineering wizardry, but in this case all of it made from aluminum — Zipp hasn't just compelled us, they've floored us. A core component from that line is the Service Course Alloy Stem. It provides exceptional performance, lightness, and positional flexibility, but it does so at a reasonable price in comparison to many more expensive (and often heavier) stems.

Zipp 3D forges the Service Course Stem from 7075 aluminum. This forging process aligns the grain structure of the aluminum, giving the material the strength that allows a thin-walled final structure. And its smooth shaping looks good with today's sculpted carbon frames. The Service Course Alloy Stem is offered in seven sizes from 70 to 130mm in 10mm increments. Each length is available in two angle options -- the ±6° option is ubiquitous these days, but the ±17° models remind us of a bygone era where stems were dead flat and oh-so pro. It has a 31.8mm clamp diameter and is a perfect match for Zipp handlebars. The 1-1/8" steerer clamp has a stack height of 42mm.

  • 3D- forged from 7075 aluminum
  • Improved stiffness-to-weight ratio
  • Each length available in two angle options (±6° and ±17°)
  • The 1-1/8in steerer clamp has a stack height of 42mm

Tech Specs

7075 Aluminum
70 mm 80 mm, 90 mm 100 mm, 110 mm 120 mm, 130 mm
6 deg, 17 deg
Steer Tube Diameter:
1-1/8 in
Bar Attachment:
Claimed Weight:
130 g
Recommended Use:
Manufacturer Warranty:
2 years

Reviews & Community


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Here's what others have to say...


big value and performance

  • Familiarity:I've put it through the wringer

Stems are one of the pieces of a bike I find that you can waste a lot of money on and go nowhere. The Zipp is super inexpensive but performs about as good as anything out there.


Super Stem

  • Familiarity:I've used it several times

Came promptly, well packaged, and as described. Very stemmy. Holds my handlebars well. I recommend Zipp products and Competitve Cyclist for all your need!

Avg. ride time: 31m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great Stem

  • Familiarity:I've put it through the wringer

The Zipp Service Course is a fantastic stem at a great price. We use these stems on many of our custom bikes for the value added at a reasonable price. They are high quality alloy stems.


Love the feel

  • Familiarity:I've put it through the wringer

Went from 110 to 120 with this one. Additionally, the previous stem was original with the bike. I swapped it out with this base level Zipp stem and the difference was huge. I also paired it with the entry level Zipp handlebars. The bike feels much stiffer. This is a component worth buying in my opinion.


Worth every cent. Scoop em up now!!!

  • Familiarity:I've put it through the wringer

At this price you are getting an absolute bargain. And the construction and performance of these are second to none for the price. This is really top quality stuff. Zipp discontinued this model service course design and logos in favor of a newer design/logos so these will be gone shortly. Sad, because these are perfection IMO. Stock up now while it's cheap!!!

Do you stock replacement M5 bolts for this stem? Thank you.

Best Answer


We don't have those here. I would contact Zipp directly and they can likely send you out some replacements.

Avg. ride time: 24m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Worthy upgrade.

    This is a great stem. Light, Stiff, Torx bolts, and Zipp quality you have come to love. A great upgrade from stock stems, and won't break the bank.

    Have a slightly smaller handelbar than...

    Have a slightly smaller handelbar than 31.8 is it possible too have the exact size i think is 1 inch , i need a stem 70mm long for my specialized m4 anybody cuold help me i dont want to change handlebars

    Hey Charles, I know this is late, but that won't work, you would need a 25.4 clamp stem.



    • Gender:Male
    • Familiarity:I've put it through the wringer

    This stem is light and bomber at a stellar price. Can't beat it.