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Service Course SL C2 Seatpost

4 out of 5 stars
1 Review
$129.00 - $172.00
Up to 25% off

Style & Size:


Service Course SL C2 Seatpost

The Zipp Service Course SL C2 Seatpost is designed to eliminate impact from the road by offering a more comfortable, dialed fit than other traditional comfort seatposts. This is done with a little help from fine-tuned and secure adjustments made via a carbon fiber post mated with a two-bolt aluminum head. With 0mm and 20mm setback options, nearly any rider can find the perfect fit.


  • Zipp's lightweight seatpost provides shock-absorbing comfort
  • Carbon tube mounts to an aluminum head for precise adjustments
  • Clamp mounts to all saddle rail types
  • 7050 aluminum offers high strength and resist corrosion
  • Item #ZIPZ05K
unidirectional carbon, aluminum
25.4mm, 27.2mm, 31.6mm
0mm, 20mm
Claimed Weight
[20mm setback] 8.8oz (249g)
Manufacturer Warranty
2 years

Overall Rating

4 based on 1 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 1 reviews
5 Stars - 0 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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4 out of 5 stars

June 9, 2024

Relatively Stiff Post

I've put it through the wringer

Switched to this post after having an s-works post. The increased stiffness is noticeable and what I was looking for.


Originally reviewed on Backcountry.com