Hot Racing Speed Run Center differential spool (locker) hub, for the 1/8 Arrma Kraton BLX, Outcast BLX, Senton BLX, Talion BLX, and Typhon BLX. Fits the center, differential. For use with Traxxas Revo spur gear.

Features:

• CNC machined solid 6061-T6 aluminum
• 3 point star cut to reduce rotating mass and increase acceleration
• Allows for best speed run acceleration and speed
• Fits only center differential