This is the HPI Channel 4 (Yellow) 27.145MHz FM Crystal Set for the HPI Baja 5B RTR radio system. If you run your vehicle with others, it is a good idea to have at least one spare set of crystals. This will allow you to switch channels should you be on the same channel as another driver so that you can both run at the same time.
INCLUDES:(1) Transmitter Crystal(1) Receiver Crystal
SPECS: Frequency: 27.145 MHz
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