The SRAM DUB PF30 Bottom Bracket is designed for your standard PF30 bottom shell, offering enhanced stiffness and durability compared to previous designs. Utilizing a 28.99mm axle, it features larger bearings for improved performance and longevity. This DUB system represents an advancement over SRAM's older GXP and BB30 systems, providing better compatibility, increased stiffness, and a lighter overall build. DUB cranks are versatile and can be used with existing bottom bracket standards when paired with the correct DUB bottom bracket, ensuring future-proofing for your bike. It is easy to install and built for sustained performance.