This is the Traxxas TRX-4 Sport Two-Speed Conversion Upgrade Kit. This adds the ability to switch from high to low range gearing in seconds from your transmitter. The set includes all the necessary transmission parts and the shifting servo.
For full control, this requires at least a 3-channel transmitter. The Traxxas 6507R 4-channel transmitter and receiver set is recommended.
Accessory Part For
TRX-4 Sport

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