A Single-Ring Aero Road Crankset for Simplified, Lightweight Performance

The SRAM Force 1x Aero E1 Crankset is a 1x road crankset designed for riders who want the simplicity and weight savings of a single chainring drivetrain on a road or gravel bike without sacrificing the aerodynamic performance of the cockpit and drivetrain. The direct mount aero chainring design - a key differentiator of the Force 1x Aero over standard direct mount cranksets - positions the chainring in a way that improves the aerodynamic profile of the front drivetrain, reducing drag at the chainring junction where a conventional spider and chainring interface creates more surface area exposed to the airstream.

The crankset is compatible with both 12-speed and 13-speed SRAM road drivetrains - confirm your specific drivetrain and chainring compatibility before purchase. This listing is for the 50-tooth chainring configuration in the 160mm arm length. No bottom bracket is included - the DUB interface requires a compatible DUB bottom bracket suited to your frame's bottom bracket shell standard, which must be sourced separately. Confirm your frame's BB shell standard and DUB compatibility before purchase.

The crankset can be upgraded to include a power meter - SRAM's modular power meter options for compatible Force cranksets allow a power measurement upgrade without replacing the crankset, making the E1 a future-proof platform for riders who want to add power data later.

Carbon Arms, X-SYNC Wide-Narrow, and DUB Spindle

The crank arms are carbon construction - providing the stiffness-to-weight ratio that carbon delivers at this level of road crankset, keeping the rotating mass of the crankset low while maintaining the rigidity needed for efficient power transfer. The 28.99mm DUB spindle diameter is SRAM's DUB standard - a proprietary interface that uses a 28.99mm diameter spindle paired with DUB-specific bottom bracket bearings. DUB is designed for durability and simplified maintenance, with DUB-specific BBs available in threaded, press-fit, and other standards to suit different frame specifications.

The 50-tooth direct mount chainring uses X-SYNC wide-narrow tooth profile technology - alternating wide and narrow teeth that engage with alternating inner and outer chain link widths to provide maximum chain retention without a separate chain guide. For a 1x road drivetrain used on varied terrain where chain drop during hard efforts or rough road sections would interrupt the ride, X-SYNC chain retention is the primary mechanism keeping the chain on the ring. The 45mm chainline is standard for road 1x configurations and should be confirmed against your frame's chainline requirement before purchase.

The 9/16-inch pedal thread is the universal standard for road and mountain bike pedals.

FAQs

Is a bottom bracket included with the SRAM Force 1x Aero E1 Crankset?

No. The bottom bracket is sold separately. The crankset uses a DUB 28.99mm spindle interface - confirm your frame's bottom bracket shell standard and purchase a compatible DUB bottom bracket before installation.

What chainring size is included and can it be changed?

This listing includes a 50-tooth direct mount chainring. The direct mount SRAM 8-bolt interface accepts compatible direct mount chainrings - confirm chainring compatibility with your specific crankset and drivetrain before selecting an alternative tooth count.

What drivetrain speeds is the Force 1x Aero E1 compatible with?

The crankset is compatible with both 12-speed and 13-speed SRAM road drivetrains. Confirm your specific rear derailleur, cassette, and chain compatibility before purchase.

Can this crankset be upgraded with a power meter?

Yes. SRAM's modular power meter options for compatible Force cranksets allow a power measurement upgrade to be added later without replacing the crankset - making the E1 a future-proof platform for riders who want to add power data at a later stage.

What is X-SYNC wide-narrow technology?

X-SYNC uses alternating wide and narrow chainring teeth that engage with alternating inner and outer chain link widths, providing maximum chain retention without a separate chain guide. This is the primary mechanism keeping the chain on a 1x drivetrain during hard efforts and varied terrain.