Zipp Service Course Seatpost - 27.2mm | 20mm Setback
Seatposts
Zipp Service Course Seatpost - 27.2mm · 20mm Setback
Zipp Service Course Seatpost - 27.2mm | 20mm Setback
The Zipp Service Course Seatpost brings reliable performance and precise fit adjustability to riders who want premium brand quality at an accessible price. Read the overview
At a glance
- Diameter
- 27.2mm
- Setback
- 20mm
- Material
- Aluminum
1 in stock
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Overview
Why Is the Zipp Service Course Seatpost a Smart Upgrade?
The Zipp Service Course Seatpost brings reliable performance and precise fit adjustability to riders who want premium brand quality at an accessible price. Its low-profile clamp design provides a wider range of fore-aft saddle adjustment than most posts in this category, giving you the flexibility to dial in your position without running out of travel. At 27.2mm with a 20mm setback, it suits a wide range of road and gravel frames where rearward saddle offset is needed to achieve proper pedaling mechanics.
Built for security and durability, the Service Course aluminum construction keeps weight reasonable while delivering the structural rigidity needed to hold your saddle exactly where you set it, ride after ride. The streamlined clamp keeps saddle installation and adjustment simple without requiring specialized tools. Whether you are building up a new bike or replacing a tired OEM post, the Zipp Service Course Seatpost gives you a dependable foundation for your fit at a price that makes it an easy call.
All the specs
MPN 00.6818.048.002
- Material
- Aluminum
- Diameter
- 27.2mm
- Setback
- 20mm
- Clamp
- Low-profile design with greater fore-aft adjustment range
FAQ
Good questions
Get to know Zipp

There's more to Zipp than this one product. Our Zipp page has the full Zipp lineup we carry and more about the brand.
Visit the Zipp page →How does this seatpost differ from the Service Course SL version?
The standard Service Course is aluminum, making it a more affordable option. The SL version is carbon and tuned for vibration compliance. Both offer the same fit adjustability and 20mm setback.
What frames does 27.2mm fit?
27.2mm is a common diameter found on many road, gravel, and endurance frames. Check your frame spec sheet or the seat tube diameter to confirm compatibility before ordering.
Should I choose 20mm setback or zero offset?
20mm setback suits riders who need their saddle positioned further behind the bottom bracket, typically those with longer legs or a classic road fit. Zero offset works for riders who need the saddle closer to the pedaling axis.
Reviews
What riders say about the Lab
“Paul does a great job. He got my bike I bought from someone there in their town and had it packed and shipped to me in Austin, TX… It got here in perfect condition!”
“Fantastic store. It has everything you may want/need for cycling. Great team. Highly recommend to anyone looking for cycling related things and bike service.”
“I recently got back into biking and wanted to add some things onto my bike. They had most of what I was looking for in shop… I'm really happy to have found them.”
Questions about this one?
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