Accessibility Widget: On | Off

Hacked: e*thirteen's 11 to 12-Speed Drivetrain Conversion 9

How to modify your older SRAM drivetrain to work with 12-speeds and gain lots of gear range in the process


The problem solvers over at e*thirteen have come up with a way to get more life out of the SRAM GX, X1, X01, or XX1 11-speed drivetrain components that you probably paid good money for not long ago. Thanks to a bit of clever reverse engineering and a few replacement parts, the TRS Plus upgrade kit allows you to convert 11-speed SRAM shifters and derailleurs to 12-speed. Included in the kit is a new 12-speed TRS Plus cassette with a whopping 511% gear range, plus all the necessary tools to complete the job.

It's an involved process, but if you know your way around a bike, take your time, and follow our video tutorial, we're confident you can handle it. We think this is a worthwhile upgrade for those looking to spin a little easier and squeeze the most life out of their gear.


TRS Plus 12-Speed Upgrade Kit Highlights

  • Modifies 11-speed SRAM GX, X1, X01, and XX1 shifters and rear derailleurs to work with e*thirteen's 12-speed cassette
  • Includes 12-speed cassette, plated and lubricated 12-speed chain, upgrade parts for shifter and derailleur, plus all the necessary tools
  • 9-46t cassette with 511% range (9-10-12-14-16-18-21-24-28-33-39-46 teeth)
  • 10 steel cogs, 2 aluminum cogs, individually replaceable clusters
  • Provides faster shifts compared to e*thirteen's 11-speed systems
  • Updated cassette pinch clamp design avoids proprietary tools
  • Works with XD Driver only
  • Cassette Weight: 330 grams
  • Chain Weight: 268 grams (includes 126 links and quick link)
  • MSRP: $299 USD // €299 Euro



The TRS Plus Upgrade Kit is available now. Cruise over to for more details.

Create New Tag
Show More Comment(s) / Leave a Comment