Last Updated: May 5, 2026 A 1x (one-by) drivetrain has a single chainring up front and a wide-range cassette in back (typically 10-50t or 10-52t). Pros: simpler, lighter, fewer dropped chains. Cons: bigger jumps between gears than 2x setups. 1x is now standard on MTBs and gaining ground in gravel/road. Below, we cover 1x advantages, … Continue reading 1x Drivetrains For Bikes: What’s The Benefit?