like the title says what are the most common things that break with traxxas 4000mah 3s lipo on slash 4x4?
If there is loth things that break should I just get the traxxas 2s 5800mah 25c?
Axles. Get tekno or mip. I have ran 6s and they have still held up
imo anything not on the ultimate or platinum should be upgraded at some point. whether it's aluminum or rpm, those are the most commonly broken parts imo....and like paul said...invest in some good heavy duty driveshafts.
I race Associated, I bash Traxxas. 28 years in RC
You will also eventually want to get an aluminum motor mount. One with a larger bearing preferably. Also want to get the aluminum bearing adapter.
Slash Ultimate El Sob special MIP King Headz 3PL