These parts are specific to the MC28 model. If you have the part number do a search in the site serach bar or look for part numbers in our technical help PDF part book section.
Carb Insulator MC28
Cylinder, Sub Assy, Front Brake, NSR250
Crankshaft Bearing, Centre, NSR250 MC21/28
Crankshaft Bearing, Right, NSR250 MC21/28
Crankshaft Bearing, Left, NSR250 MC21/28
Crankshaft Bearing, Set, NSR250 MC21/28