The best replacement for drivetrain is driveline.

The best alternatives to drivetrain are rated as following:
★★★★★  driveline
★★  powertrain
★  2x10
★  drivetrain
  3x10 drivetrain

Your alternative for drivetrain is not listed? Suggest!
Speaking about drivetrain, one probably shouldn't forget about sram cassette.

Other search terms related to drivetrain and their ratings are:
★★★★★ sram cassette
★★★★ x9 pod shifters
★★★ shimano cassette
★★★ revo twist shifters
You have in mind a companion for drivetrain and it is not yet here? Propose!



Google Trends

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drivetrain
driveline
powertrain