I would be very careful with purchase of Alpha One. In my opinion there is a relevant design issue with it, which can cause damage to person riding it. My item become useless just after several months of riding it despite I carefully followed torque specification. I was lucky to see this defect shortly before my "A" race this year, which otherwise could have been dangerous to my health and to other riders.

I made some photos of the problem with the Alpha One monopost: https://drive.google.com/...bHtIml_a?usp=sharing