2 years and probably hundreds of hours of crawling and comping on mine and never a single failure! I've carried spare parts with me the entire time and never used a single one of them. X4's for life!

If you don't drive your TRX-4 in a manner that would otherwise tear out the transmission, snap driveshafts, brake axles, bend frames, and cripple/kill the driver in a full-sized(1/1 scale) truck the "portal gears" will probably last forever. I am constantly gobstruck how ridiculously people drive these RCs and then complain about 'weaknesses'. A full-sized truck (or its driver) wouldn't last 2 minutes if driven 1/10 as violently as many TRX-4s are driven.

I KNEW IT! lol i literally broke the portal input gear the other day. went to the store and stocked up on a few haha

Even the best will break. Just have to upgrade. Thanks for the update Francis!

So, I bought one when the first"kit" came out. In the last 4 years I have put at least 200 miles, hundreds of hours. Running it with a 3800 kv mamba x combo.....so I wasn't nice to it. In all this time, I have broken both fronts(replaced with Traxxas chrome moly in just the front) but kept the normal input gears in the rear. Truly remarkable how many hours I've had on it without that much significant wear

That's the only thing that's every broken on my TRX-4 sport. Good video.

Thanks for all the info you've made so far regarding what mods are worth it for the TRX4, luckily my only purchase before youtubing it are the Traxx

thamks a lot! ALL MY upgrades on my trx4 you recommended them

You’re awesome man big help getting into the crawler stuff!! In the middle of assembling my trx4 right now haha just watching videos for a break 😂

I guess I don't beat mine hard enough. Six TRX-4s and never lost a portal gear.

Thank you very much for this tips... I've just finished my trx4 sport and I'm so happy (Hobbywing combo for crawler) I'm going to by spare. By now front because it is more stressed Ciao Nanni

Great observation 👍 it's something to look after and now I'm sure to keep the same engine

We have 4 model of TRX4 from 2 years and only one time we broke input rear portal gear, but when we open portals we found a MISSING BEARING... incredible, we have had NO problem for months even without a BEARING on that gear !

I’m running GPM hardened portal input gears in my TRX4s and never stripped again since, also massively cheaper than the Traxxas version 👍🏻 also work with the stock shafts so can get both front and back upgraded for less than the cost of just the Traxxas setup for the front axle 👌🏻

3:20

Very interesting. I have not broken on either. I broke the rear axle housing last December driving and jumping in the snow. I did let it acclimate for the day before I drove it. What I always find interesting, is how some break the same part and others don't, but they break different part that the other never does. Crazy.

Very true had to replace one front of my Defender after around two years also.....

Mines doing good. I've had mine since 2018 and only replaced the servo 1 time. I don't know if I'm not bashingbjard enough but. She's floating good.

Congrats on 40k subs!!! 😄👏👍

You are correct. Thanks.