Surprisingly, I can’t find it on the technical specs on their website. If you have one, just pull it out and I believe the OD is stamped on it (the size was stamped on my Pace seat post). Or use a micrometer.
I just bought a seat suspension from Aventon which comes with various post adapter rings. My Aventure took the 30.9 mm adapter and it worked great. So my guess is that the seat post is that size.
I just bought a seat suspension from Aventon which comes with various post adapter rings. My Aventure took the 30.9 mm adapter and it worked great. So my guess is that the seat post is that size.