Originally Posted by
mugenize1
My mistake the ninja and the grp where both made by Rossi I heard that con rod for the MR.21 will fit the MR.28 Ninja if so I think the rod should fit the grp line then. Because I know that the the grp and the ninja.21 you can use each others parts NO?
Not Rossi, GRP. GRP made the MR line of Ninja's and their own GRP motors. If it works in a GRP .28, it should work in an MR Ninja .28 too. If it's an OS Ninja .28, it will not.