This replacement dog bone is sized 8x77mm and supplied as 1 pcs for Savage X series drive systems. Identified by model HPI-86151 and finished in silver, it transfers drive torque while allowing suspension articulation required in scale and off-road use.
Use this part when the original dog bone shows signs of wear or bending, or when you are setting up drivetrain alignment during tuning. Verify the 8x77mm measurement and that the dog bone seats properly into the output cup and axle hub on your Savage X components before use.
Fitment notes: to access the dog bone ends remove the wheel and lower suspension, check mating cups and retaining pins for wear, and confirm free rotation through the suspension travel after refit. Perform a low-load run before full throttle testing.
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