The Eagle S500 DUB Carbon Crankset is engineered for riders who refuse to compromise. Lightweight carbon crank arms paired with an aluminum X-SYNC 2 chainring strike the perfect balance between featherlight performance and rock-solid chain control. SRAM's DUB technology brings a streamlined approach to bottom bracket fitment, offering superior contamination sealing and broad compatibility, both forward and backward, across a wide range of bottom bracket standards. With a variety of chainring options to choose from, you can tailor your gearing exactly to your riding style and the trails you love. Features Carbon crankset with 3-bolt aluminum X-SYNC 2 chainring for Eagle Drivetrain Ecosystem compatibility Available in 170mm and 175mm DUB Wide spindle Specs Model ID: FC-S500-B1 Rear Speeds: 12-Speed Chainline: 52.0mm, 55.0mm Spindle Interface: DUB Wide Chainring Material: Aluminum Crank Arm Material: Carbon BCD: Direct Mount (DM) Chain Technology: Eagle Drivetrain Config: 1x Compatibility SRAM Eagle S-Series, including the S100, S200, and S500, are built to work seamlessly with previous generation SRAM Eagle 12-speed components (SX, NX, GX, X01, XX1), offering backward compatibility with your existing drivetrain S-Series components are not compatible with SRAM Transmission (T-Type) S-Series crank arms use the DUB Wide Spindle, which requires a DUB Wide Bottom Bracket . For those with a standard bottom bracket already, the same spacing can be achieved with the MTB Wide Spacer Kit