Thisis the optional rear brake kit for the Traxxas Revo 3.3 monster truck andSlayer 1/10 short course truck. If you install the optional center differentialfor the Traxxas Revo 3.3 monster truck or Slayer SCT, you will need thisoptional rear brake kit to make sure you have brakes for both the front andrear wheels on the truck. It will also allow you to set independent front andrear brake bias, which is a excellent tuning option on the track.
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