The Power Wheels factory 7R gearboxes are best gearboxes to use.
The First Gear is the LEAST LIKELY to fail.
Replacing the factory nylon first gear with a loud metal gear makes as much sense as putting titanium lug nuts on your truck because the first gear rarely fails as long as the center post is lubricated with the factory grease.
-If you want to be proactive consider buying spare factory gears or buy an entire spare gearbox to have every gear set on hand (links below).
To Avoid Broken Gears:
-Avoid rough and bumpy terrain which cause torque spikes
-Use an ESC/soft start setup for smooth starts
-Never add rear rubber traction which can also overheat motors and increase the risk of a roll over
-Inspect gearboxes to ensure there is grease on the gear posts especially on the smallest first gear
For more information please see Motor and Gearbox Information
Sources for factory gears/gearboxes
(we are not affiliated with these companies):
Power Wheels Gearboxes:
Power Wheels 7R Gearbox w/o Motor
- Product Code: -
- Availability: Out Of Stock