Over the past few years we have seen a tremendous improvement in the entry and mid level drivetrain components category. SRAM surprised us all with the quality and performance of the GX groupset, and then by releasing the NX groupset. Shimano redesigned the SLX and Deore groupsets, M7000 and M6000 respectively. All this, left previous drivetrain components very behind.

SRAM GX Eagle vs Shimano XT M8000

Following the release of the 12-speed Eagle X01 Groupset more than a year ago, SRAM decided to release a more "affordable" but fully compatible 12-speed GX Eagle groupset that completely raised the bar in the mid-range category. Shimano on the other hand offers a fantastic 11 speed groupset for a lot less. The thing is, SRAM's GX Eagle is definitely cheaper than the X01 version, but still a lot more expensive than the XT counterpart.

A Shimano CS-M8000 cassette goes for about $60 at the time of writing this, while the SRAM XG-1275 cassette is about $115, and that is just the cassette.

Eagle Intro


While we made clear that the GX is still more expensive than the XT counterpart, it is still affordable at about $375 for a cassette, shifter, chain and derailleur. Add the crankset and you are still just below the $500 mark. Impressive, just thinking about switching to a 12 speed drivetrain last year was crazy talk.

But keep in mind that to get your bike switched to an Eagle drivetrain you will need to replace your shifter, derailleur, cassette and chain. Also check your crankset for compatibility.

SRAM GX Eagle XG-1275

450 grs
Cassettes Year: 2017 Speeds: 12 Teeth: 10-50t
best price
Jenson USA

SRAM GX Eagle Rear Derailleur

290 grs
Rear Derailleur Year: 2017 12 Speeds 50 max teeth Cage: Long
best price
Jenson USA

SRAM GX Eagle Trigger Shifter

122 grs
Shifters Year: 2017 Rear Speeds: 12
best price
Jenson USA

SRAM GX Eagle Chain

258 grs
Chains Year: 2017 114 links Link: yes Speeds: 12
best price
Jenson USA

Shimano XT M8000

In 2015, Shimano released the M8000 groupset, replacing the M780 and rasing the bar in the mid range. The M8000 is available in 10-42T range (can be one-up'ed to 46T) and can be used in a 1x or 2x configuration. These components are almost as light as the GX, reliable and even 3 years later are still considered top in the category. The XT brakes are an industry standard, offering excelent raw power and reliability.

Shimano DEORE XT CS-M8000

Cassettes Year: 2016 Speeds: 11 Teeth: 11-40, 11-42, 11-46
best price
Chain Reaction Cycles

Shimano DEORE XT RD-M8000 GS Rear Derailleur

Rear Derailleur Year: 2016 11 Speeds 42 max teeth Cage:

Shimano DEORE XT BR-M8000 Hydraulic Disc Brake

Brakes Year: 2016 Type: hydraulic Fluid: mineral

Shimano DEORE XT SL-M8000-B-I RapidFire

Shifters Year: 2016 Rear Speeds: 11

Shimano SLX M7000

Now, let's talk about the SLX. For years, Shimano's SLX groupset has offered incredible performance for less. In fact, you can now grab an M7000 shifter, cassette and derailleur for a total of $126. Should I mention that it's the same price of a GX Eagle cassette?.

Another thing to consider with Shimano drivetrains is that they are compatible with 2x and 3x configurations. If you still haven't jumped on the bandwagon of one-by, Shimano will be your best option.

Shimano SLX FC-M7000-11

Cranksets Year: 2017 Speeds:
best price
Chain Reaction Cycles

Shimano SLX RD-M7000-11-GS

323 grs
Rear Derailleur Year: 2017 11 Speeds 42T(2x11), 46T(1x11) max teeth Cage: Long

Shimano SLX CS-M7000

467 grs
Cassettes Year: 2017 Speeds: 11 Teeth: 11-40T, 11-42T
best price

Shimano SLX SL-M7000-11-R

135 grs
Shifters Year: 2017 Front Speeds: Rear Speeds: 11

Are electronics worth the cost?

We can't talk about drivetrains without talking about Shimano's Di2 electronic groupset: M8050 1x11.

Ride what's good enough for you

At the end of the day it comes down to what you feel is good enough for your style. If you are one of the riders that barely or can't even feel a difference between using SLX or XT components, then stick to SLX. If you are already riding XT or can definitely feel differences between SLX and XT components, stick to XT. If you have been dreaming about owning a 12 speed drivetrain but found that X01 Eagle was too expensive, you will be extremely happy with the GX version. At the end, it all comes down to how much you want to spend and if you can take real avatange of it.