This seat post will keep you more comfortable on your bike by adding about 10mm of extra suspension to the back of your bike. It is compatible with most bike seats. Simply measure the size of your current seat post to ensure the correct sizing. 27.2 and 28.6 sizes compatible with the Mule and Flatlander models. 31.6 compatible with the medium Scout and all Storm models. If you need assistance knowing which post size you should order for your Bakcou bike, feel free to reach out to our customer service team.