e*thirteen Launches 12-Speed Upgrade Kit

Looking to add an extra gear to your 1×11 drivetrain without paying for a whole new 12-speed set up? Enter the e*thirteen’s TRS Plus 12 Speed Upgrade Kit. Upgrade your 11 speed SRAM drivetrain to 12-speeds without needing new shifters, derailleurs, cranks, or chainrings. Why spend more on SRAM’s full Eagle 12-speed drivetrain, when all you get is less range and more weight?

TRS Plus 12 Speed Cassette:

Our 9-46t, 12 speed cassette gives riders 511% range and less weight by using a shorter chain and a smaller chainring to achieve similar gear ratios to other 12-speed drivetrains. Finally, a smaller chainring and more compact drivetrain increases ground clearance, while still offering more range than SRAM Eagle.

  • Replaceable aluminum and steel clusters
  • Shorter chain for weight savings vs SRAM Eagle 12-speed
  • Smaller chainring and derailleur offer more ground clearance
  • 336 grams
  • 9-46t cassette (9, 10, 12, 14, 16, 18, 21, 24, 28, 33, 39, 46)
  • 10 steel cogs, 2 aluminum cogs
  • 511% range
  • Faster shifts in the bigger cogs
  • Updated pinch clamp design avoids proprietary tools
  • XD Driver only
  • Compatible with SRAM Eagle 12-speed drivetrains
e13 12-speed upgrade

11-Speed Shifter Upgrade Parts:

  • Allows you to convert your 11 speed SRAM GX, X1, X01, and XX1 shifters to 12-speed shifters
  • Includes injection molded shifter spool, one stamped steel ratchet (for SRAM GX, X1, X01), one stamped steel ratchet (for SRAM XX1), pivot bolt, washer, and shifter assembly fixture.

11-Speed Rear Derailleur Upgrade Parts:

  • Allows your 11-speed SRAM rear derailleur to work with our 12-speed cassette
  • Works with ALL SRAM 11-speed rear derailleurs (SRAM NX, GX, X1, X01, XX1)
  • Includes two derailleur pulley spacers, one long and one short derailleur cage bolt

12-Speed Chain:

  • 268 grams (weight includes 126 links and quick link)
  • 126 links in total
  • Plated and lubricated for durability and precision shifting
  • Includes 12-speed quick connect link
e13 12-speed upgrade

TRS Plus 12-Speed Upgrade Kit includes the following:

  • TRS Plus 9-46t 12 speed cassette
  • Derailleur pulley spacers (x2)
  • Derailleur cage bolts (x1 long, x1 short)
  • 12-speed shift ratchets (x1 GX/X1/X01, x1 XX1)
  • Shift spool w/two bearings
  • Shift spool bolt
  • Shift spool washer (GX/X1/X01 shifters only)
  • Shifter assembly fixture
  • 12-speed chain and quick connect link
  • 2.5mm hex
  • 3mm hex
  • 4mm hex
  • T25 Torx bit
  • Square bit
  • 5mm hex and bit holder
  • Shift cable and 2000mm cable housing
  • Grease tube


  • Pricing: $299 // € 299
  • 9-46t cassette with 511% range
  • Includes our 12-speed cassette, 12-speed chain, upgrade parts for your shifter and derailleur, and all the necessary tools.

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