For $299.00, e*thirteen’s TRS+ 12 Speed Cassette and Upgrade Kit offers a gear range that beats SRAM Eagle at 511% without having to buy a whole new drivetrain kit. Inside this package includes a TRS Plus 12 speed cassette, 12 speed chain, upgrade parts for your shifter and derailleur, and all the necessary tools to make the upgrade. If you’re thinking of upgrading your mountain bike, flat bar ‘cross bike, or tourer, now’s your chance to do so on a budget. Head to e*thirteen to see more.