Hi, I have a Ruption Phase 2014 as my first BMX.
I wanted to change the sprocket, but when I removed the first crank, I realized my BB + crank's axle suck! Something like this ( photo ) and I can't neither remove my sprocket without a specific tool!!
So I choose to change em, I would like to buy this axle: Gusset Pigmy Axle & OKR Bolts ( photo )
but description says:
Pigmy standard axle and OKR bolts; 19/20mm machined 48T fine spline Cr-Mo axle for secure torque transfer.
Length: 145mm (BMX Std.).
Compatible with Pigmy or Pigmy R-series arms (not supplied).
Supplied with Pigmy OKR bolts and caps.
Weights (incl. bolts): 320g.

Will it fit in a 19 BB? Or should I buy a 22mm? It says 19/20 mm machined 48T fine spline Cr-Mo axle

Is it compatible with my cranks?

Could I also install Blank Mid Bottom Bracket on my bike? ( photo )

Thanks a lot!!