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Ritchey WCS 1-Bolt Seatpost


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  • Blatte, 27.2x350mm, 0mm Offset

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WCS 1-Bolt Seatpost

Sleek and durable, the WCS 1-Bolt Seatpost showcases the hallmarks of Ritchey’s design philosophy in a 3D-forged alloy post. Using a single side-load clamp provides a streamlined adjustment for both seat angle and fore-aft positioning. Two setback options allow you to perfect your fit to maximize pedaling efficiency: a 20mm offset provides a more relaxed position, while the 0mm places you closer to the bars for a more compact position. The WCS 1-Bolt is compatible with alloy-rail saddles, though an interchangeable clamp is available from Ritchey directly for use with carbon rails.

  • Light and durable post for your road or gravel bike
  • Single-bolt design simplifies saddle position adjustment
  • Two offset options for either a more elongated or compact fit
  • Item #RITA09R

3D forged 7050 alloy
[27.2mm] 350mm
Claimed Weight
Recommended Use
gravel, road cycling
Manufacturer Warranty
1 year

Tech Specs

What do you think about this product?


>Rating: 3

Much Heavier Than Claimed

True to size

CC lists the weight for the 27.2 x 350 setback version at 160 grams, but Ritchey claims the weight is 195 grams, and the seatpost I received comes in at 230 grams. That’s 45% higher than the CC claim, and almost 20% heavier than the Ritchey spec. I don’t mind if a component is a bit heavier than advertised, as samples can vary a bit, but this post is much heavier than advertised. Not sure where CC got the 160 gram weight, probably just a listing error, but I’m disappointed that this fairly expensive aluminum post is nowhere near the weight claimed by either the maker or the seller.

>Rating: 5

Awesome perch for your saddle

I've used it several times

The best part of this seat post is how quick and easy it is to dial it in. The simple 1 bolt design makes adjustments a breeze, there is no awkward fighting with that front bolt on a 2 bolt design, worth it to me.