Zipp Service Course SL Seatpost - 20mm Setback | 27.2mm
Seatposts
Zipp Service Course SL Seatpost - 20mm Setback · 27.2mm
Zipp Service Course SL Seatpost - 20mm Setback | 27.2mm
The Zipp Service Course SL Seatpost is a flex-tuned carbon post engineered to absorb road chatter more effectively than most products marketed as comfort seatposts. Read the overview
At a glance
- Diameter
- 27.2mm
- Setback
- 20mm
- Material
- Carbon
- Rail Compatibility
- All saddle rail types
1 in stock
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Overview
What Makes the Zipp Service Course SL Seatpost Worth It?
The Zipp Service Course SL Seatpost is a flex-tuned carbon post engineered to absorb road chatter more effectively than most products marketed as comfort seatposts. The compliance designed into the lightweight carbon tube keeps your sit bones fresh over long miles without sacrificing power transfer, translating vibration away before it reaches you. The 20mm setback positions the saddle rearward for riders with longer femurs or a more relaxed fit, directly improving pedaling efficiency and long-ride comfort.
The redesigned two-bolt clamp head provides exceptional bolt accessibility for fast, precise saddle angle and fore-aft adjustments in the field or at home. Compatible with all saddle rail types, this post works with whatever saddle you run without adapters or extra hardware. At 27.2mm diameter, the Service Course SL fits a wide range of road and gravel frames and represents a meaningful performance upgrade over stock aluminum or lower-grade carbon posts at a competitive price point.
All the specs
MPN 00.6818.056.002
- Material
- Carbon
- Diameter
- 27.2mm
- Setback
- 20mm
- Clamp
- Two-bolt with redesigned head for maximum bolt accessibility
- Rail Compatibility
- All saddle rail types
From the Lab
Go deeper on the Zipp Service Course SL Seatpost - 20mm Setback | 27.2mm
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 is the Service Course SL different from the standard Service Course seatpost?
The SL version is made from carbon fiber and is specifically engineered for vibration compliance, absorbing road noise better than the aluminum standard Service Course post while being lighter.
Does this post work with carbon rail saddles?
Yes. The two-bolt clamp is compatible with all saddle rail types including carbon, titanium, and steel rails.
Who should choose 20mm setback over 0mm setback?
Riders with longer legs or a more traditional road fit typically benefit from 20mm setback to achieve proper knee-over-pedal-spindle position. A bike fit is the best way to confirm which offset is right for you.
Reviews
What riders say about the Lab
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