This RC-scale replacement dog bone measures 8x77mm and is supplied as 1 pcs, designed for Savage X series drivetrains. The part is identified by model HPI-86151 and finished in silver, transferring torque from the gearbox output to the wheel axle while permitting suspension articulation.
Fit this component when a factory dog bone is worn, bent, or when adjusting drivetrain geometry during tuning. Before installation, confirm the 8x77mm dimension and ensure the dog bone engages cleanly with both the output cup and axle hub on your Savage X components.
Fitment notes: remove the wheel and lower the suspension to reach the dog bone ends, inspect mating cups and pins for wear, and confirm rotational freedom through the suspension travel after installation. Retest movement under low load before full operation.
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