Most new gravel bikes now come set up as either 1x (a single chainring up front) or 2x (a front derailleur with two chainrings), and the choice affects how you'll climb, how much maintenance you'll do, and how much range you have for BC's mix of steep forest service roads and long paved connectors. Here's how the two compare and which one makes more sense for the way you ride.
What 1x and 2x Actually Mean
A 1x drivetrain uses a single chainring up front paired with a wide-range cassette in back, typically 10 to 52 teeth. There's no front derailleur to manage, so shifting is simpler, just one shifter, one set of gear changes.
A 2x drivetrain uses two chainrings up front (commonly a 46/30 or similar split) paired with a narrower-range cassette. You get more total gear combinations and smaller jumps between gears, at the cost of a front derailleur to maintain and a second shifter to operate.
Gear Range: Where 1x Wins for Climbing
For BC's steeper forest service roads and fire road climbs, a wide-range 1x setup (something like a 40-tooth chainring with a 10-52 cassette) often provides an easier low gear than a comparable 2x setup, since the smallest 2x chainring rarely goes below 30 teeth. If your rides regularly include sustained climbing on loose or steep gravel, 1x tends to be the more forgiving choice.
Gear Range: Where 2x Wins for Range and Spacing
What 2x gives up in outright climbing gear, it makes up for in total range and smaller jumps between gears. On long paved connectors between gravel sections, a 2x setup lets you fine-tune cadence more precisely, which matters more to riders covering long mixed-surface routes at a steady pace than to riders prioritizing technical climbing.
Maintenance and Simplicity
A 1x drivetrain is simpler to maintain: no front derailleur to index, one less cable to manage, and a narrower Q-factor in some cases. For riders doing their own maintenance or riding in muddy, wet BC conditions where a front derailleur can clog with debris, that simplicity is a real advantage. If you're already comfortable with basic drivetrain upkeep, our gravel bike upgrade guide for BC's rougher trails covers other setup changes worth considering alongside a drivetrain choice.
Which Setup Fits Your Riding
Choose 1x if:
- Your rides include sustained, steep climbing on loose gravel or fire roads
- You want simpler maintenance and fewer things to adjust or clog with mud
- You're comfortable with slightly bigger jumps between gears in exchange for easier climbing
Choose 2x if:
- You ride long, mixed paved and gravel routes where cadence consistency matters
- You want the widest possible total range without sacrificing small gear jumps
- You're comfortable maintaining a front derailleur
Most riders doing typical Sea to Sky gravel routes, mixing paved connectors with punchy forest service climbs, do well on 1x for the simplicity and climbing range, but committed long-distance and touring riders often prefer what 2x offers in overall range.
Tires and Gearing Work Together
Gearing choice interacts with tire width too. Wider, higher-rolling-resistance tires benefit from the easier climbing gears a 1x setup typically provides, while narrower tires on a 2x setup can lean more into road-like efficiency. Our gravel bike tire width and pressure guide covers how tire choice factors into your overall setup.
If you're still deciding between a gravel bike and a road bike in the first place, our gravel bike vs road bike guide is a good starting point, and our gravel bike sizing guide will help you nail down frame size before you get into drivetrain specifics.
FAQ
Is 1x or 2x better for gravel riding?
Neither is universally better. 1x favors climbing range and simplicity, 2x favors overall range and smaller gear jumps. The right choice depends on your terrain and how much you value maintenance simplicity.
Can I convert a 2x gravel bike to 1x?
Yes, in most cases, by removing the front derailleur and one chainring and adjusting the rear cassette range, though the exact conversion depends on your specific drivetrain components.
Do professional gravel racers use 1x or 2x?
Both are common at the professional level, with the choice often depending on the specific course profile, flatter, faster courses favor 2x, while steeper, more technical routes often favor 1x.
Talk to Our Mechanics
Not sure which setup is right for your riding? Browse our Gravel Bikes collection or talk to our mechanics at our Vancouver or Squamish (Corsa Cycles) location, they can walk you through the trade-offs based on where you actually ride.
