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Service Course SL Stem

5 out of 5 stars
1 Review

Out of Stock

Don't worry though, we have a lot more Gravel & Cyclocross Stems in stock than that.

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Service Course SL Stem

Zipp's entire Service Course line proves that aluminum still has a place in cycling componentry — it will never be as light as carbon, sure, but it will never be as expensive either, and that's enough of a reason for us to stand behind it. Zipp strikes an admirable balance between cost, weight, and performance with the Service Course SL Alloy Stem, which features a 3D-forged 7075 aluminum construction to give it a mix of superb strength and stiffness inspired by kit built for the peloton.

Both stems in the Service Course line are built in the same tooling, with smooth lines and a newly redesigned faceplate with enough negative space to for easy handlebar orientation. Compared to the pedestrian version, the Service Course SL stem drops some grams with CNC-machining and by replacing the stainless steel Torx bolts with titanium.


  • Lightweight stem that balanced price and performance
  • 3D-forged aluminum construction resists flex
  • Titanium bolts ensure highest strength and lowest weight
  • Four-bolt clamp distributes stress for reduced chance of failure
  • Item #ZIP001X
[body] 7075 aluminum, [bolts] titanium
100mm, 140mm
6°, 17°
Clamp Diameter
Steer Tube Diameter
Bar Attachment
Claimed Weight
4.4oz (125g)
Manufacturer Warranty
2 years

Overall Rating

5 based on 1 ratings

Review Summary

1 Stars - 0 reviews
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5 Stars - 1 reviews

Fits True To Size

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5 out of 5 stars

July 7, 2020

Don't need C

I've put it through the wringer
Size Bought:
100 mm

A stem is a very straightforward part. Seldom does one fail do it's job, but this one does it's job while looking stylish, lean, and clean. Carbon stems have nothing on this unit. The 7-series alloy and ti hardware make it a premium part at 1/3 the cost of carbon at exactly the same modulus (stiffness). Perfect.

Kris K