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Zipp SL Speed B1 Carbon Seatpost

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The Zipp SL Speed Seatpost is a favorite of pro's and weekend warriors alike due to its lightweight strength and dependability. Now even lighter, the Zipp SL Speed B1 Carbon Seat Post weighs in at just 170g thanks to the borrowed Exogram™ technology from Zipp's partner, SRAM. With the Exogram technology, the SL Speed B1's tube is as light and strong as possible, delivering some of the highest strength-to-weight ratings around.

The discerning cyclist demands that their seatpost be simultaneously adjustable, secure, lightweight, and fit-sensitive. With that in mind, Zipp offers the SL Speed B1 Carbon Seat Post in 0º or 20º offset, both available in either 27.2 or 31.6mm diameters. The single-bolt head is highly adjustable and easy to use, even when on the side of the road.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Seatpost Type: Rigid 

Seatpost Clamp: 27.2 

Seatpost Clamp: 31.6 


Setback: 20 

27.2mm x 400mm - 0deg Offset

Mfg PartNum: 00.6818.021.006 

Seatpost Clamp: 27.2 mm


Ordered by Most Relevant First
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Reviewed 8/5/2019
by Anonymous
Cycling Enthusiast
San Francisco, CA
Value Rating
Overall Rating
Great seat post with compliance, strength, and light weight

Upgraded from Zipp Service Course post to this post and immediately noticed a difference in the compliance while riding. The post is stiff but also has a lot of compliance to absorb all the road noise.

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Reviewed 9/27/2018
by billspreston
Value Rating
Overall Rating
2 of 2 customers found this review helpful.
Lightweight and simple to adjust

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.

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