Jomurema Carbon diff axle

I found this on eBay just browsing around, and couldn't help myself ordering one.

The axle are made by 4 parts. One carbon axle in center, carbon pin, and two aluminum pieces at the ends.
It looks a bit skinny, but actually seems to be quite solid. 

The whole piece are straight as an arrow, and the aluminium pieces seems to be well glued to the shaft. 


I had to weigh it when I opened the package. 0,9 grams. That is 0,3 grams lighter than the previous lightest axle out there!
As we know, the diff weight is very important, so I was looking forward to try it out.


I built it together with the following parts:


QteQ Ultrra light weight differential housing set. QT-081101
QteQ Light weight differential left hub. QT-080801
Reflex Racing 64 pitch Machined spur. RX1154
Reflex Racing High grade ceramic thrust bearing. RX1137
Kyosho pressure plates. MZW206-3
Reflex Racing ceramic differential balls. RX1119

Fully assembled, with left hub, this differential now weighs in at 4,8 grams. That is insane:O


The axle seems well thought out. The main alu part where the spur and everything goes looks to be an exact replica of the Kyosho steel axle. The other side are as the PN lightweigh alu shaft.

Initial testing are very promising.
I have only used it alone on track, so I have not had any hard impacts with it, but I think as long as the wheels are protected by the body, it will be very hard to destroy it. I will write a follow up after I have tested it some more on track with more racers.


I assume the weak points are where the carbon shaft are glued to the alu parts, and it will be interesting to see how it holds up.

The weight saving on the differential are as always noticeable. Be prepared to adjust your drag brake :D


It absolutely seems to be a real good product, and I will be looking forward to see what other parts this manufacturer will come up with.