Weigth 15 kg (23 kg ?)
Aluminium :
+ down tube
+ rear-axle (120 cm ?)
+ front fork
Stainless steel :
+ shaft
+ side tubes
Adjustable:
+ seat for/back-ward
+ rear-axle low/high
+ rear-axle for/back-ward
+ angle of shaft (fun or race)
+ downtube (7 positions)
+ NEW front wheel (low/high)
Integrated :
+ back-support
+ side-support !!!
High Q. ball bearings:
+ NEW front fork
+ all wheels
Wheels:
+ standard
+ Fat Wheels