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e*thirteen TRS+ 12 Speed Upgrade Kit

Our kit lets you upgrade your existing 11 speed SRAM™ drivetrain to a 12 speed drivetrain without needing new cranks, chainrings, shifters, or derailleurs.

The TRS Plus 12 Speed Cassette offers the same 511% (Eagle™-beating) range, an unbeatable value, and crisp shifting performance on SRAM™ drivetrains. Why spend MORE money on SRAM's™ full Eagle™ 12 speed drivetrain, when all you get is LESS range and MORE weight?

So, why buy this over Eagle™?

  • You don't need a whole new drivetrain...just our cassette and shifter.
  • Keeping your existing 11 speed SRAM™ drivetrain gives you better ground clearance in both the chainring and derailleur.
  • The smaller 11 speed derailleur, chain, chainring, and cassette are SIGNIFICANTLY lighter than Eagle drivetrains.
  • The 9-46T cassette has a straighter chainline in comparison to Eagle™, for a longer-lasting drivetrain.


  • Material: 7075 Aluminum and Heat-Treated Cromoly Steel.
  • Drivetrain 1 x 12 speed.
  • Cog Sizes: 9-10-12-14-16-18-21-24-28-33-39-46.
  • Features: Ingenious assembly utilizes XD™ Driver mounting to enable a 9-46T 12 speed cassette. Keeps your drivetrain simple and still gives the gear range of a 2X system. Compatible with SRAM™ systems.
  • Range: 511%.
  • Colours: Black.
  • Weight: 336g.

Kit includes:

  • 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.

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