Tekno RC6855 Big Bone Center Driveshaft and Outdrives

Easy to install and makes slightly less noise rattling around compared to stock with the added Orings in the kit.

Installed it just how the instructions say to do it. Been running this center drive shaft on 3s with a 4 pole motor for about 4 or 5 months. I run it on the street, dirt, grass, anything and no issues at all. It actually survived a 50 mph front impact straight into a steel stop sign post. Didn't warp, bend, not even a scratch on it so those little O rings that go inside the drive cups do their jobs as shock absorbers. The dog bones show no signs of wear at all, but the front dog bone might slightly rub on the bottom of the front chassis where the steering rack is. It'll make a faint rubbing noise for the first few runs but it'll eventually wear in and go away. You could lightly sand that area of the chassis or just let it do it on it's own. The amount of material that it wears off is not much at all. About the thickness of a sheet of paper, if that. So no worries at all.In the end, this center drive shaft is stronger than the stock center drive shaft and it slides back and forth without any binding, unlike the stock center drive shaft. Which is why the stock one gets bent sometimes. It can bind up pretty easy, not letting it slide back and forth during chassis flexing and it causes it to get bent. Love my Tekno Big Bone center drive shaft so if you're thinking about it, go for it.

This Big Bone center drive shaft is a must have on your Traxxas Slash 4wd. Why is it better than the stock blue tube that comes on your car? One simple reason, it isn't going to bend when you run head on into a wall. If you have raced the stock drive shaft for very long, you will eventually take a head on collision into the wall. You are going to here some clanking noises and you will notice the color is coming off of the shaft ain bright shiny rings at some point on your car. When you see or hear these things, it is bent and it is time to replace.This drive shaft has small o-rings that slide into the ends and act as a shock absorber for the center rod when the front gets impacted. We have had several more head on collisions into the wall and this thing is holding up pretty well. It has not bent yet. The only thing that has happened is we have lost a small set screw, but I am guessing this was due to my son not getting it tight enough when he put this drive shaft on his car. Great little upgrade that will save you some money and down time on the track. The company also emailed me to make sure it was working out for me, which I appreciate.

MAKE SURE TO USE BLUE LOCTITE ON THE SMALL SET SCREW don't be like me and loose it on the first launch u do with the truck other than that feels beefy real nice simple design but holds it downUPDATE:6/25/16 i have now just bought a second one well worth the price yea the stock traxxas one is cheap and i could have bought multiple stock spline onez not dog bones like thiz and the traxxas ones are junk super soft bent one instantly as i run big motor big power the big bone is bent also but not as much as all my other traxxas ones so yea also this has been thru some serious carnage and still took it so i bought the second one

Major upgrade from the stock traxxas drive shaft. couple of things to mention make sure you have locktite if not the small grub screw will not hold and on my lcg slash i will have to sand down the front bulk head to make clearence

I bought 2 of these shafts. The first one, I did not read the description well and it came with only the shaft. Then I purchased this one with the two end connections. Now I have a spare center drive but I don’t think I’ll ever need it. Especially because it would be to easy to replace having the spare handy. I’ll use it as cheap insurance. Very very happy with the look, strength, and weight of this upgrade. I would highly recommend. Especially over stock which wobbled after the first day I owned the RC. GREAT upgrade! A+

Fits perfectly in my slash ultimate. Looks great as well haven’t tested out yet but I’m sure it’ll last longer than the stock center driveshaft it’s defined a worthy upgrade.

So far, all is good. Shipped to me pretty quickly, everything in the description was included. Makes a funny clocking noise when the motor cogs, but that's nothing new, already read about it in previous reviews. No rubbing on chassis, probably because I have the HCG chassis. Seems pretty strong. Takes the punch of a 30c 2s no problem. Actually did a front flip first run, didn't twist at all. Well worth the few extra bucks over the stock driveshaft.