Spur Gear 48t steel CNC lightened NB48 2.1

TKR9419 Spur Gear (48t, steel, CNC, lightened, NB48 2.1)
NB48 2.0 and NT48 2.0 Compatibility
This spur gear is compatible with the NB48 2.0 and NT48 2.0 if the small nubs on the bottom are removed and the following parts are used.
TKR9310B Split Center Diff Mount (NB48 2.1)
TKR9115B Differential Case (F/R/C, all 2.x)
or TKR9115B Differential Case (F/R/C, all 2.x)
This item fits the following:
TKR9419 - Spur Gear (48t, steel, CNC, lightened, NB48 2.1) is included with the NB48 2.1 kit and can be used as a replacement part for that vehicle.
This can be used with the NB48 2.0 and NT48 2.0 vehicles and should be a direct replacement for the stock part or used as a new feature. Please use the instruction manual for the kit(s) listed to verify compatibility and no additional items are necessary before purchasing.