New Ninja .21 buggy motor?

According to Greek site, radiocontrol.gr, there is a new Ninja buggy motor out. Information is thin on the ground but there are enough changes on the motor to warrant a look. For starters the engine head features a new spec number, with the addition of A to the MR21-BO1 and also the crankshaft and conrod sport new series number. Not exactly a major update but more a simple material upgrade it seems. No official word on the Ninja website.

Source: Radio Control [radiocontrol.gr]