This is an RC-scale replacement spur gear designed for use on Enduro Sendero trail trucks, sold as an individual upgrade part by GPM. The unit is 85 teeth, offered to change final drive ratio relative to the original 87T item, allowing a higher top speed without altering the motor pinion gear.
Material and role: the gear is manufactured from Harden Steel #45 to provide improved wear resistance and stiffness compared with softer stock plastics, intended for hobby trail use where durability under load matters.
Installation notes: the part is located besides the motor gear in the drivetrain, replace the existing spur and then verify correct gear mesh and backlash before running. Check for smooth rotation and no binding after fitting, and retighten any retained hardware to manufacturer torque recommendations for your model.
Included item: Spur Gear - 1pcs
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