Ninja B04 vs. OS B2101 - differences?
 

Hello engine guru's :),

does anyone know exactly which parts are the same and which are different in the OS B2101 and the Ninja B04?

I currently have the B2101 and now as I'm ordering the MBX8 - there's pretty cost effective option of buying it together with the B04 engine.
I'd like to have 2 same/similar engines to have interchangeable parts in case one of them would go bad.

B04 has the new 2102 Carb

Thanks MaricopaAgent!

I've also noticed that the B04 has a steel rear bearing instead of ceramic which is included with the B2101.
Would that be it for the differences?

I'm mostly curious if those parts are the same in those two engines:
- con-rod
- sleeve
- piston
- crankshaft

Everything else has a lower priority for me.