INJORA 22PCS Steel Sealed Bearing Kit for TRX4M Upgrade, Black

These are a great upgrade for your TRX-4M. They work and fit as they should they are cheaper than the Traxxas set. I will be upgrading all my TRX-4M with these bearings.

This improved the drivetrain smoothness 10x compared to stock brass bushings. I honestly didn't think these would make as much of a difference as they did, very smooth. I would assume this would just about double my battery life if the truck has been working this hard for over a year just to overcome bushing friction/resistance. This is probably the most cost-effective improvement you can make to your TRX-4M. Bearings fit perfect, and there was one for every single bushing on the truck.

Injora products are the best. Perfect fit and easy to install.

The quality of the berrings is excellent, make sure you know what sizes you need as there are many different sizes aviable

Not sure the tolerance of these and I cannot tell the difference between these and the Traxxas branded set, so I will most likely get these again in the future. They make a 100% difference over the stock sealed bearings that come with the TRX-4M. Its a no brainer replacement, although I am stacking up with transmission bearings for some reason, we need a set with or without the transmission bearings, every set of gears comes with them anyway. If you get this set and expect to replace them all, be prepared to disassemble the entire car, literally. I've been replacing as I go, but I noticed that there are some that are more labor intensive than others. The front axle bearings, in particular. It took me some time to strip down, clean and reassemble the entire front end to replace these. The transmission bearings took some time too, so I saved those for when I rebuilt the transmission, they of course went in easily and worked very well over the stock bearings. I would and will buy these again and would recommend them to others, 100%

Pretty good, nicely packaged and bearings are smooth. Wish they would label each baggy with the size of the bearings, but it's not a big deal. Just want to note that this WILL NOT eliminate torque twist on the TRX4M. Did not notice much difference at all after installing all the bearings. The mini crawler just sucks lol should not have to upgrade so much on it.

Works phenomenal, good upgrade

Great price! Does indeed take the slop out of the driveline (going from memory, didn't exactly measure it) and feels good to know the tiny little car is now loaded with rolly rollers :) A few observations, however: * The bearings that go in the gearbox have a VERY tight fit with the two axleshafts which support two of the three gears. Swapping from low gear range to high gear range with bushings is an absolute breeze. Doing it with these bearings makes the task much more frustrating and easily doubles the time required * Some of the bearings seem to be out of tolerance the other way, the ID is too large. If memory serves the front axle was the worst offender. Not terrible but concerning * This might just be a thing, but the oilite bushings seemed to spin free-er. With front axles fully assembled, spinning any of the three exposed shafts with my finger was more effortless with the bushings than after putting in the bearings. So, we'll see how they do once they're worn in a bit. Maybe they'll glide a little smoother. For less than a 1/3 the price of the Real Deal, they're a steal. I think they're off the shelf jellybean whatevers all packaged together nicely (and that they are, which makes the task all that much less intimidating) Easy, only slightly time consuming install. Just buy the bearings for your stupid little car and get it overwith already.