What Our Gearhead® Experts Are Saying: "I run the 83mm DUB BSA on my enduro rig—it’s bulletproof. The oversized spindle feels solid under hard pedaling, and the seals do a great job keeping grit out through sloppy rides. Once installed, it’s quiet, smooth, and forgettable in the best way."When we build a bike that needs to take a beating, we trust the SRAM DUB BSA 83mm Bottom Bracket to keep things running quietly and efficiently through every climb, descent, and muddy push. Designed for gravity and all-mountain setups, this bottom bracket uses SRAM’s DUB spindle standard to unify crankarm fit, improve sealing, and extend bearing life—all while shedding unnecessary weight. Its Gutter Seal Technology locks out water, dust, and trail grime, so we can ride harder with less time spent wrenching. The 83mm BSA shell fits threaded downhill and enduro frames with precision, offering the stiffness we need to drive power through corners and across rough lines. Built for strength, simplicity, and long-term smoothness, this bottom bracket just keeps spinning.