What a 1x does to top-end speed (and how to fix it fast)
A 1x setup can reduce top-end speed because you can “spin out” sooner—there’s no big-ring bailout—but it’s usually easy to change by swapping to a larger front chainring and/or a different cassette, and a 2x conversion is the bigger-range option if you want it; for a concrete example, riders often go from a 40T front ring to a 44T to add more high-speed gearing.
On a Diverge with 1x, the limitation isn’t that the bike “can’t go fast”—it’s that your gearing can run out before your legs do on descents, group rides, or long paved drags. When cadence climbs and you’re still trying to accelerate, that’s the spin-out feeling.
Easy change options that actually move the needle
- Bigger front ring: The most direct way to regain top-end. More teeth up front = more speed per pedal stroke.
- Cassette choice: A cassette with a smaller smallest cog (or tighter high-end steps) can give you more speed-focused gearing feel, depending on your drivetrain.
- Go 2x: If you want both a tall top gear and a super-low climbing gear, adding a second chainring is the “have it all” route—more parts, more range.
Why 1x is still popular (after you solve the spin-out)
Once the gearing is matched to how you ride, 1x is loved for its clean simplicity: fewer shifting decisions, fewer moving parts to fuss with, and a tidy drivetrain that’s easy to live with on mixed-surface miles.
Cranksets that keep 1x quiet, solid, and on-track
If you like the simplicity of 1x but want it to feel more planted under load, the crankset and ring design matter. Both options below are built around SRAM’s 1x-friendly approach: a dedicated chainring profile aimed at keeping the chain where it belongs when the ride gets chattery.
SRAM Force E1 XPLR DUB Wide 1x: practical performance
This one is all about a no-drama drivetrain. The X-SYNC ring profile is designed for strong chain retention, and the overall vibe is quiet and composed on everything from pavement spins to fire-road grinds. It’s a great match for riders who want to keep maintenance simple and focus on riding, not fiddling.
SRAM RED XPLR 1x DUB: premium, purpose-built feel
If you’re building a high-end gravel setup, this crankset brings a stiff, lightweight platform with a hollow carbon arm construction paired with an aluminum ring for durability. It’s designed to play nicely with modern 12- or 13-speed gravel drivetrains, and it leans hard into chain control and long-term durability with the DUB ecosystem.
- X-SYNC chainring design: geared toward keeping the chain engaged on rough surfaces.
- DUB compatibility: a durability-focused interface designed to hold up to real mileage.
- 1x simplicity: fewer parts, fewer adjustments, cleaner setup.
How to choose the right change for more top-end
If you’re hitting the cadence ceiling on fast sections, the fix is about where you want your speed: more up top, more in the middle, or the widest possible spread. Start with the simplest lever and only get more complex if you need it.
Step 1: Confirm you’re actually spinning out
- Pick a familiar paved descent or flat tailwind stretch.
- Shift into your hardest gear.
- If cadence skyrockets and speed stops building, that’s a gearing ceiling—not fitness, not tires.
Step 2: Decide which “easy” swap fits your riding
- Mostly fast roads + gravel connectors: Go bigger on the front ring (example: 40T to 44T) to extend top-end without changing the whole vibe of 1x.
- Mixed terrain but you want smoother high-speed steps: Consider a cassette change that better matches your preferences (tighter spacing can feel nicer when you’re trying to hold a pace).
- You want both sprinty top-end and bail-out climbing: Look at a 2x conversion—more parts, more setup, more range.
Step 3: Match the crankset to your priorities
Want a reliable, low-fuss 1x feel? The Force XPLR DUB Wide option is a strong pick. Building a dream-level gravel rig with a premium, stiff, lightweight platform for modern drivetrains? The RED XPLR 1x DUB is the move.
Get your Diverge gearing dialed with Backcountry
Gearing tweaks are the kind of small change that can make a bike feel brand new—especially when your rides bounce between fast pavement and rowdy backroads. The trick is choosing the right lever to pull (front ring, cassette, or full 2x), then picking parts that keep your drivetrain calm when the terrain isn’t.
That’s where Backcountry comes in. Tap a Gearhead® Expert for help thinking through what you’re feeling on the bike—spinning out on descents, wanting tighter steps, or trying to keep 1x simplicity without giving up speed. We’ll help you narrow it down to a setup that matches your routes and your riding style, so you spend less time second-guessing and more time clicking into the gear you actually want.
