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Zipp SL Speed B1 Carbon Seatpost

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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 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.

Zipp SL Speed B1 Carbon Seatpost
Other styles of this product are available.

Seatpost Type: Rigid 

27.2mm x 400mm - 0deg Offset

Seatpost Clamp: 27.2 mm


27.2 x 400mm - 20deg Offset

Seatpost Clamp: 27.2 mm

Setback: 20 mm

31.6mm x 400mm - 20deg Offset

Seatpost Clamp: 31.6 mm

Setback: 20 mm

31.6mm x 400mm - 0deg Offset

Seatpost Clamp: 31.6 mm


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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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