This 51-tooth main spur is made to fit HPI Savage Nitro models as a service or replacement part. Constructed from POM engineering plastic in a black finish, the gear maintains accurate tooth profiles and steady mesh with compatible pinions used on Savage trucks.
Sized to match hobby RC drivetrains, the component aims for easy swap-in replacement. During fitting, verify pinion seating and that the gearbox output turns freely to minimise uneven wear. Replace the spur if teeth show deformation or after changes to other drivetrain components.
Install the spur, confirm concentric mesh with the pinion, and run the drivetrain by hand to ensure smooth engagement and minimal slop.
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