Originally Posted by
masher81
Would it possible to use a Ninja JX 21 b01 CrankCase and Crank, with the arrow piston, sleeve and rod. Would it be possible to use the JX Crank and rod.. and use the arrow piston and sleeve? Thanks!
Yes. The new GR-II is almost the same as the JX-21 Bo1a. All parts are interchangeable.
They will not fit any engine based of the XZ-B though, only the VZ-B based engines (short stroke only).