From Exotek Racing:
13.5t spec racing spur gear for the center diff of the XB4 series of buggies.
Allows you to gear higher thanks to the smaller tooth count, allowing you to run bigger pinions without cutting and modifying the stock motor plate.
Includes M2.5 hardware so that it reverse mounts to the spur while allowing the spur teeth to clear the hardware.
Heavy duty machined delrin for precision and durability.
Not for the slipper set.