This seat post fits a large and extra large Day 6. Unlike most seat posts, this one has dual bolts for a more secure attachment.
![](https://cdn.shopify.com/s/files/1/0555/5260/6385/files/Day6_Shipping.jpg?v=1697396670)
![](https://cdn.shopify.com/s/files/1/0555/5260/6385/files/Sizing-Chart.jpg?v=1708057305)
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