SRAM Force 1 DUB Crankset

The SRAM Force 1 DUB Crankset is a dedicated 1x drivetrain component built for road and gravel riders who want a clean, single-chainring setup without stepping up to the Red tier. Sitting in the middle of SRAM's road hierarchy, it delivers meaningful weight savings and a refined ride feel at a level most riders will find hard to outgrow. The Force 1 is designed for those who've committed to running a single ring — not as a workaround, but as a deliberate choice.

The crank arms are carbon fiber, which keeps the rotating mass low without sacrificing the stiffness you need when putting down power on a climb or out of a corner. DUB — SRAM's Durable Uniform Bushing — is the bottom bracket interface here, a 28.99mm spindle diameter designed to balance bearing longevity with installation flexibility across a wide range of shell standards. The chainrings are X-Sync 2, SRAM's profiled tooth design intended to improve chain retention and reduce drivetrain noise — a meaningful consideration when you're running a single ring with no front derailleur to guide the chain back. Available arm lengths from 165mm to 175mm and chainring sizes of 36t, 40t, and 46t give you real options to dial in your fit and gearing for the type of riding you do, whether that's long gravel loops or fast road rides.

SRAM Force 1 DUB Crankset Specs at a Glance

• Drivetrain compatibility: 1x (single chainring)
• Bottom bracket interface: DUB (28.99mm spindle)
• Crank arm material: Carbon fiber
• Chainring tooth options: 36t, 40t, 46t
• Arm length options: 165mm, 170mm, 172.5mm, 175mm
• Chainring standard: X-Sync 2
• Intended use: Road and gravel 1x drivetrains

Design Benefits

1. Carbon arms with DUB spindle technology — The carbon construction keeps weight in check while the DUB interface is engineered to support a wide range of bottom bracket shell standards, giving you flexibility when building up a bike or upgrading an existing drivetrain.
2. X-Sync 2 chainring retention — The profiled teeth on the X-Sync 2 ring are designed to grip the chain through rough terrain and hard accelerations, reducing the chance of drops without the added complexity of a front derailleur or chain guide in most road setups.
3. Multiple ring and arm length combinations — With three chainring sizes and four arm lengths across the range, you can match the crankset to your body geometry and gearing needs rather than settling for a one-size compromise.