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My K5 hightrail build

Silver04v

Newbie
Joined
Mar 24, 2025
Messages
6
Location
US
What's going on folks. Used to have a tuber wheelie king build on here back in the day... Santa brought us some new trx4s this past Christmas. So here we are back into it!

This is my hightrail. So far, the servo broke, so I upgraded to an eco power 250t. While doing so I put softer springs all around on it. Whelp, once I did that, the front end is designed so poorly on the hightrail that the panhard bar was just sitting on the axle and servo horn. What a terrible design.

So I got a aluminum panhard mount, chopped the oe panhard mount off the old servo mount. Got a front bumper/servo mount to mount the servo away from everything. What a difference! Now I have the droopy, soft suspension I was looking for. I wanted it sitting lower but not losing out on travel. Wanted to fit the interco irok super swamper 1.9s on cheapo 1.9 steelies. I think it sits real nice now. Performs great!

Then randomly my RX fried. When I say fried, I mean, toast. Like might as well have been in an oven, or under a torch. It came down off a drop kinda hard, on the front wheels, and I think maybe the servo spiked or something, and fried the rx. I didnt have a bec or anything. I bought a new rx, and added the traxxas bec to it. While that does seem to be working really well, I decided to swap to a CC bec wp... and gonna just bypass harness the RX as to not fry it while running stock esc for the other micro servos. Anyone ever see that happen before? Thought it was kinda odd tbh...

Anyways, I'll put up some more pictures soon.
 
Looks like a really capable rig... Good save @ .28 lol. I run direct power servos in both my trx4s so idk on the rec/ esc. Running hw1080 on both of em as well. Great looking trx4.
 
Then randomly my RX fried. When I say fried, I mean, toast.
traxxass strikes again

dont feel bad it happens to me every time i plug in some thing with traxxasssss printed on it

maybe you have to say traxxass 3 times fast while your pluging in the battery or something to keep them from going up in smoke i dont know i never figured it out
 
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traxxass strikes again

dont feel bad it happens to me every time i plug in some thing with traxxasssss printed on it

maybe you have to say traxxass 3 times fast while your pluging in the battery or something to keep them from going up in dmoke i dont know i never figured it out
Ha, funny you say that because the first two pro scale light kits I put in went up in smoke. Not literal, but yeah. toast. I installed the second and then third, right in the hobby shop to ensure they realized it was not me causing this crap. LOL Anyways, that eventually got fixed and has been fine ever since.

Is there any recommended receiver/transmitter that works well with all the shift servos, etc for the trx4? For now, its working nice and tolerable for what I do with the truck. But eventually, Im sure something else will go.
 
Tonight I got all the electronics setup the way I like...I think. Time will tell, but everything seems to be working all happy together.

I got a CC BEC WP 2.0 and using a Holmes hobby Rx bypass harness I'm solely using the bec to power my servo to 7.25. So far working great.

I figured, since I'm bypassing the Rx with that, there's no reason I can just leave the Traxxas bec installed and powering up the Rx and shift servos, lights etc, through the Rx... Figured a little extra voltage stability can't hurt and the two becs are technically not in the same system together, so they shouldn't cause any issues.

Lots of wiring all throughout, but I've got it all tidy now and it looks good to me imo.
Few shots of the servo/panhard mount mods also...

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Mod list-

1.9 steel bead locks and hub nuts from Amazon
Injora green inserts
RC4WD super swamper irok2 1.9xl
Amazon aluminum servo mount and panhard mount
.39rate front springs
.29rate rear springs
15wt shock fluid in oe hightrail shocks
Eco power 250t servo
Castle Creations WP BEC 2.0
Holmes hobby Rx bypass harness
Holmes hobby servo extension
Traxxas bec
Traxxas pro scale light kit w/rock lights
 
If you go to "Comments, Suggestions, and Help" section there are several threads about posting pics. The site changed recently and some people were having difficulty posting pics. I didn't link any of those threads here but I can if you're unable to find/ access them.

Rig looks good. Nice upgrade list.
 
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