e*thirteen
REVIEW

e13 TRS+ 12-Spd Upgrade Reviewed

Words Andrew Major
Photos Andrew Major
Date Sep 14, 2018

These Go To 12

In case you missed it, back in June, e13 released an upgrade kit for SRAM shifters that allows riders to convert their 11-spd shifter to 12 spd. The kit comes with everything you need, including a jig to help perform shifter surgery, a 9-46 12-spd cassette and the shifter conversion parts for 299 USD. You can find all the details on the kit as well as details on installation here


I'm sort of in love with the e13 TRS+ 12-speed upgrade kit and at the same time, I really couldn't give an damn how many clicks I get from my shifter. I'd be more than happy with a 4-speed cassette that hit 14t, 24t, 34t, and 44t. I don't know if that makes me the best or worst candidate to be writing about the California think-tank's product but what the heck, I've got a few things to say.   

The teardown was a fun experience with my mini-me, and the kit is an impressive value since it includes the tools, ratchet, a 12-spd chain, and a TRS Plus 12-Spd cassette for only 20 USD more than the cassette itself. It only counts when running a GX drivetrain but, since the e13 shift-spool uses a bearing, like the higher end SRAM shifters, the e13 kit also improved shifting feel - especially once my cable and housing started to get a bit used. 

e13 TRS+ 12speed upgrade AndrewM

Eagle-wide range without the Eagle-long cage. 

e13 TRS+ 12speed upgrade AndrewM

When adding the cage spacers remember the pulleys are directional. 

I really like the new e13 cassette interface, which uses a lockring instead of a proprietary tool. That's now spec on the 11-spd models as well. A bike that offers this stock is Marin's new AT-7 which uses a unique combo to provide excellent value. It mixes a Shimano SLX 11-spd drivetrain, a SRAM XD hub interface, and an e13 9-46t TRS Plus cassette to deliver the 511% 1x drivetrain that most of us need - even if it's not the Gucci component mix most of us want. The benefits over 11-spd are tighter shift jumps, greater range than Eagle while using an existing 11-Spd SRAM drivetrain and the absence of an extra long derailleur cage. 

From another perspective, anyone who has a compatible 11-Spd SRAM shifter and derailleur in good shape, but needs a cassette and chain, essentially gets a free upgrade in range, and clicks, by buying this kit. 

e13 TRS+ 12speed upgrade AndrewM

I've been very happy with the life of both 11-Spd and 12-Spd TRS+ cassettes. I appreciate  e13 offering the cassettes in halves since the aluminum cogs wear out faster.  

The kit produces shifting performance equal to a high-end SRAM cassette. I notice the tighter shifting of the 12-spd cassette, compared to the same 9-46t spread on the TRS+ 11-Spd cassette, when I'm pedaling on the road but, whether it's me or the terrain I ride, I don't notice this on the trail.  I was happy with the range, performance, and longevity of the 11-Spd TRS+ cassette and I would choose that setup over GX Eagle simply for the shorter derailleur cage. The upgraded shifter spool is worth making the jump to 12-Spd on a GX system, but if I was running a higher end SRAM 11-Spd group I'd just stick with the 11-SPD e13 cassette option. 

e13 TRS+ 12speed upgrade AndrewM

It's just a standard SRAM shifter outside. 

e13 TRS+ 12speed upgrade AndrewM

With an e13 shifter spool inside. 

Then again, I'm one single speed-loving bike industry hack and there is a sea of riders out there spending to upgrade to Eagle drivetrains. If twelve clicks are the answer why not get more range and a shorter derailleur cage for less money?

Jig

I wish e13 sold their shifter jig separately for a couple bucks because being able to completely take apart my SRAM shifter and clean it is a nice touch I'll add to my yearly routine. 

If you have an 11-Spd SRAM drivetrain you're thinking of taking to twelve, the 300 USD TRS Plus 12-Spd kit is definitely worth a look. Do you have an 11-Spd drivetrain and an XD driver without being 12-Spd curious? I'll make another plug for the value of the 250 USD 9-46t 11-Spd cassette. 

Comments

sospeedy
0
sospeedy  - Sept. 14, 2018, 5:01 a.m.

While this kit isn’t for me, I do have an e13 cassette with the ‘old’ interface needing e13’s proprietary lock ring tool. It has worked well. But...the aluminum portion is finished and I need to replace it. Will a new aluminum half (with the new lockring interface)  fit with the old steel portion (which is still going strong)?

Thanks!

Reply

AndrewMajor
+1 sospeedy
Andrew Major  - Sept. 14, 2018, 8:47 a.m.

The interface looks the same to me but I’m trying to find out for you definitively.

Reply

sospeedy
+1 Andrew Major
sospeedy  - Sept. 14, 2018, 11:33 a.m.

That’s great, thanks Andrew! I was hoping someone would know. And hoping this is not a case of e13s update to “interface 2.0” doesn’t render the one I’ve had for about a year obsolete... I’d 

Ike to just replace the worn alu part, and keep using the steel part, rather than replace the whole thing.

Reply

AndrewMajor
+1 sospeedy
Andrew Major  - Sept. 14, 2018, 11:38 a.m.

Totally - that’s the beauty of their system!

I’m in the same boat as the alloy cogs on my 11-Spd setup are toast and the steel are still great - so I was going to need to find out sooner than later anyways.

Reply

AndrewMajor
0
Andrew Major  - Sept. 25, 2018, 11:42 p.m.

Huge apologies for the delay following up on this. The definitive answer from e13:

1) If you have the 9-44t cassette then you have to stick with the original (proprietary tool) lockring interface. Parts are in stock. 

2) If you have a 9-46t cassette then the new set-screw cluster works great. You do need to use a spacer but both the part and instructions are included with the new upper cluster. Both the old and new clusters are available.

Reply

rnayel
0
RNAYEL  - Sept. 14, 2018, 9:07 a.m.

I just noticed that they've released a new 12 speed cassette. Price is pretty competitive for the weight, weighs less (336g claimed) than XX1 (360g) and costs in between GX and X01 at 279USD.

https://bythehive.com/products/trs-plus-12-speed-cassette

Might be my next cassette once the X01 Eagle on my bike wears out.

Reply

AndrewMajor
0
Andrew Major  - Sept. 14, 2018, 9:13 a.m.

Same 12-spd cassette I’ve been riding here. The extra money covers chain, tools, and shift spool. 

Shifting is excellent. The 9spd cog is clunky but barely more so than the 10spd on regular XD cassettes.

Reply

rnayel
0
RNAYEL  - Sept. 14, 2018, 2:13 p.m.

I should have read your review a bit closer, my apologies, thanks for the clarification Andrew.

Reply

AndrewMajor
0
Andrew Major  - Sept. 14, 2018, 3:20 p.m.

No stress! Just wanted to point it out in case you want to check it out.

Reply

vincentaedwards
0
Vincent Edwards  - Sept. 14, 2018, 9:30 p.m.

Compatibility question:

Will it work with the forthcoming (someday, maybe) xtr9100 shifter and mid-cage derailleur?

Reply

AndrewMajor
0
Andrew Major  - Sept. 14, 2018, 10:10 p.m.

Mid-cage definitely no problem. 

My understanding is that Shimano and SRAM 12-spd have the same spacing and in that case this cassette definitely works with the setup you’re asking about.

At this point - at least for a farrier with my qualifications - it is a bit like asking if the shoes I have fit your new unicorn :-)

Reply

vincentaedwards
0
Vincent Edwards  - Sept. 15, 2018, 4:42 p.m.

Thanks Andrew! Sounds like good news but I’ll definitely double check before I order parts. Glad to hear you had such a good experience with this cassette. I was a bit wary or 3rd party cassettes at first, but e13 is proving to be a great option for many.

Reply

alexdi
0
Alex D  - Sept. 17, 2018, 9:24 a.m.

> My understanding is that Shimano and SRAM 12-spd have the same spacing 

Do you have a source for this? The 11 and 12 M9100 cassettes have the same spacing (so new 11 isn't compatible with old 11), but I haven't found anything definitive for the actual sprocket pitch.

Reply

AndrewMajor
0
Andrew Major  - Sept. 17, 2018, 12:36 p.m.

>”At this point - at least for a farrier with my qualifications - it is a bit like asking if the shoes I have fit your new unicorn :-)”

Alex, I haven’t even seen an XTR M9100 drivetrain in person.

My understanding is that a rider with an XD wheel and SRAM 12-spd compatible cassette can use that with M9100 but that’s not something I have proven for myself and obviously is not something SRAM or Shimano is saying.

Certainly don’t make any purchasing decisions based on “my understanding” until you verify compatibility yourself.

Reply

alexdi
0
Alex D  - Oct. 12, 2018, 3:47 p.m.

Sprocket pitch is apparently 3.65mm for SRAM and 3.55mm for Shimano. Close enough to work. But what's more interesting...

https://www.youtube.com/watch?v=hDA0oiuMltA

Looks like the shifters and RDs are cross-compatible. Color me surprised. You could also (apparently) do this with 11-speed kit, though it seems they've gotten even closer with 12.

Reply

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