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Your cart is empty.Traxxas 3942X 12-tooth, 32-pitch heavy-duty pinion gear is machined from hardened steel for extra strength. Includes set screw. Use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings.
Beer is food
Reviewed in the United States on April 11, 2023
Ran for a few days. Then it shredded apart.....
casey benson
Reviewed in the United States on February 9, 2022
These harden steel pinion gears are great. Ive never broken any teeth.
Gina Howe
Reviewed in the United States on April 12, 2022
2 teeth on gear broke within first 10minns of first run with the gear.
Gary Corral
Reviewed in the United States on March 9, 2021
The harden street is very strong. If you have steel and plastic gears the plastic gears will get chewed up
Taylor
Reviewed in the United States on November 23, 2020
This is perfect on my trx4,It helped add a little speed on my trx4 sport to about 15 16mph.I didn't want it too fast for my crawler.Read the gear chart for what is good for your rc is my advice.
Todd S.
Reviewed in the United States on September 3, 2018
Up 1 tooth from stock on my TRX-4 to give a little extra up top. Speed test clocking in at 14mph on 3S.
Skip BizR
Reviewed in the United States on July 7, 2018
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