It is a kinnect body float seat post purchased separately. Most of my 16 KM one way commute is on hills. The hills, which it powers through nicely, are the main reason I went with the Powerfly . On the bridge ascent and hills on either side of the Fraser river it maintains 20 to 25 KM fairly easily. A little more speed on the flat sections would be nice but that is only 2 Km. I don't use the first three gears . It is well suited to my commute and the suspension is nice, the brakes are fantastic but if the route was flatter a higher top speed would be better. Super Nova mini pro 25 lights are on order. Hope to post pictures soon. The fenders are SKS Velo 65 for MTB . The rack and bag are Bontrager. I would buy the same setup again for my commute but it is not the best choice for a weekend 70 km road trip. Two bikes is the answer just have to decide on the second one now.