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Direct replacement for the differential unit in HPI RS4 series RC cars
Includes both steering bellcranks
and Senton lines
ready to mount after assembly
Part number TRX8940 for straightforward cross-referencing when ordering
Traxxas Fixed RC Gear Adapter - 3790 Suspension Pins Inner Direct replacement for the differentialThe Traxxas 3790 Gear Adapter Fixed is a genuine Traxxas replacement part designed to restore the drivetrain on a wide range of Traxxas RC vehicles. Part number TRX3790, this gear adapter provides a secure, fixed connection within the transmission or motor gear system, ensuring consistent power transfer from the motor to the drivetrain. If your existing gear adapter has worn, stripped, or broken during hard use, this is the correct OEM replacement to
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