Signin to Your Account
Questions? Call our tri Specialists! 1-800-445-4790
COVID-19 Response
20deg Offset
Click to zoom
20deg Offset
27.2mm x 330mm - 0deg Offset

SL Speed B1 Carbon Seatpost

Mfg PartNum:
In Stock Now
Ships Free!
Earn $26.50 in Podium Club credit. Click to Learn More.
This size is not eligible for Podium points
Please Confirm Size
Qualifies for Free Shipping!

Backorder: This item is currently out of stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

The people's seat post.

The Zipp SL Speed Seatpost was a favorite of pro's and amateurs alike, both on those long rides through the mountains and at the starting line of 'cross races. Redesigned for 2017, the Zipp SL Speed B1 Carbon Seatpost benefit from their partner SRAM's Exogram™ technology, making this as light and strong as possible. Further improvements include a redesigned clamping system to provide even greater adjustability, security, and ease of use. To truly make this seatpost the people's choice, the SL Speed B1 is now available in either 0º or 20º offset versions.

Weighing in at just 170g for the 0º or 172 for the 20º, both available in two diameters: 27.2mm or 31.6mm.


Seatpost Type: Rigid 

27.2mm x 400mm - 0deg Offset

Seatpost Clamp: 27.2 mm


Mfg PartNum: 00.6818.021.006 

27.2 x 400mm - 20deg Offset

Mfg PartNum: 00.6818.021.004 

Seatpost Clamp: 27.2 mm

Setback: 20 mm

31.6mm x 400mm - 20deg Offset

Seatpost Clamp: 31.6 mm

Setback: 20 mm

Mfg PartNum: 00.6818.021.005 

31.6mm x 400mm - 0deg Offset

Mfg PartNum: 00.6818.021.007 

Seatpost Clamp: 31.6 mm


Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Lightweight and simple to adjust
by billspreston
2 of 2 customers found this review helpful.

This post is lightweight, comfortable, and the single bolt design is surprisingly easy to adjust without any slippage issues. A bit pricy, but in line with similar offerings. Does use a T25 Torx bolt which can be a turn off for some people.

Reviewed 9/27/2018
Was this review useful to you? Yes/No
Thank you for your feedback.