Hi everyone! It wasn't long ago when I installed the Eagle GX drivetrain on my bike.
Since then I've moved it to a new bike,
I have also given you comparisons between the rear derailleur, X01 versus GX
I did the same for the shifter.
I have also given you a quick review of
these X01 cranks, carbon cranks, and the oval chainring, and I'll put all those
in the description of the video but today I have the X01 cassette so
XG-1295 and I will take a closer look at it and compare it with the Eagle GX, or XG-1275.
After about half a season of use, you can see the wear here on the cassette.
It's mostly cosmetic, I don't see any deterioration in the performance.
And I can only complain about a few things: one is the fact that the chain gets out of
sync with the narrow-wide profile or these two biggest cogs.
Also, you will get a tiny bit of chain rub here
when the chain is on the smaller cogs.
This is a Boost spacing bike and with the chainline is provides I cannot make this completely silent
no matter what I do.
But let me take this cassette off and take a closer
look at it next to the more expensive X01.
You can see here the chain out of syn with that 42T
See how it's riding on top of the teeth
and here is in the 50T.
Now this is very rare with this X01 derailleur.
As for noise
Right around here, when you put the power down
you're gonna you're gonna hear that.
Nothing horrible, so I'm definitely being picky over here.
Just like the rest of the X01 drivetrain
cassette comes in a black box and here it is.
Just by looking at the Eagle GX and X01 side by side, you can easily say which one is more expensive.
Mind you the X01 is pretty much twice the price of the GX.
The major difference between the two though is the way they are constructed.
and yes, they both offer the 500% gear range that's clearly stated over here.
Start at 10T, finish with the 50 tooth which is an alloy sprocket.
The gear spacing is exactly the same.
Here on the GX you can see these pins used to attach the 50 tooth
to the other 11 stamped steel cogs,
also held in place using the same pins.
That's the reason why this is also called a FULL PIN cassette.
This is the same tech they (SRAM) introduced with the 11 speed drivetrains in 2014.
Clearly stated here in the back is XG-1275 10-50 tooth, Eagle technology.
That's for the GX cassette.
Looking at the XO1, XG-1295 10-50T Eagle tech.
The coating of this alloy cog on the back is different, this is grey the other one is black
but otherwise they seem to be using or reusing the same piece of aluminum.
And if you look at the teeth over here, they seem to be matching exactly.
With the exception of the NX, all other 11 and 12 speed cassettes from SRAM use an XD Driver.
You can see that threaded area over there that's covered in grease right now.
Also you have a bushing, right up top there, that is greased up already
so this cassette is ready to be installed.
I would also suggest to put a
bit of grease here on the splines before you do that.
Looking at the build,
yes, this seems to be using the same 50 tooth sprocket that's used on a GX.
But aside from that, the other 11 cogs here, these are all machined from one piece of chromoly steel
that is a very expensive process.
And that also gives it the lighter weight.
448g for the GX and by installing an X01 you are
saving exactly 94 grams
because this one comes down to 354 grams.
With the bike dirty for my last race and after about 100 kilometers of use
you can see the shifting on this X01cassette being nice and smooth.
I thought it was important to show you real-life shifting with my full suspension being under sag.
That is because it affects the B-gap adjustment and the B-gap is
one of the most important adjustments for an Eagle drivetrain.
Grabbing a whole bunch of gears at once,
something that is very common on a mountain bike is no problem.
Also grabbing a whole bunch of gears under power makes it even noisier and that
is when you might notice the chain coming out of sync with the two biggest cogs.
Usually you would hear a big bang as the chain shifts into the right position,
in sync with the narrow-wide profile of the either of 42 or the 50 tooth cog.
By the way, the noise that you heard during my test with the chain on the 50 tooth
was nothing else but the chain rubbing on that GoPro mount,
so sorry about that.
What do I think about these two
cassettes now that we're at the end of this test?
Well, if the bike comes with X01
I would say just to enjoy the cassette, it's a beautifully made and you save 100 grams.
If you don't care about the 100 grams and you care more
about the money in your pocket, I'll say go for the GX cassette.
It works just fine, I don't see any major improvement
on the X01 even though the cassette
is built quite differently.
But overall I'm pretty happy with the Eagle drivetrain.
But I have to tell you, can't wait to try a cassette like this with
the newly released XTR shifter and rear derailleur.
For more information about this stuff
check out the links in the description.
Don't forget to like, share, subscribe and comment on the video.
And that's it guys.
I will see you all on the trails.
Cheers!