Originally posted by jfc_tech
yes, i do know they're the same...just, funny no one wanna talk about it. Like eg. "hey, im using Nova TOP engine..what about you, REX?"...something in this line.. 
im planning to order this engine...just curious about the market...
all i heard of, the ever famous NSR S5, Nova Max, Mega, JP...in fact they all nova based too...hmm interesting.
Yep..Actually, Nova Rossi also provide the Crankcase, Piston, sleeve to RB too .....
To able to produce engine by RB Itself, I think it 's very big investment.