The Arrowmax AM-448039 delivers a carefully cut 48P, 39-tooth option for racers and hobbyists wanting reliable engagement. Its tooth geometry focuses on smooth contact with spur gears to reduce vibration and improve drivetrain feel during varied running conditions.
Swapping to a 39T pinion shifts the balance between torque and top speed in a predictable way, making it useful when tuning for specific tracks or surfaces. The precise profile helps limit premature wear on mating gears when mesh is set correctly.
Verify shaft diameter and bore compatibility before installation to ensure a secure fit. Once fitted, test for correct mesh and run the car at low speed to confirm smooth operation before full-power use.
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