The relationship between bottom bracket spindle and bearing is the core of DUB technology. It’s where stiffness meets durability. SRAM took it a step beyond conventional thinking and made everything simpler — and better integrating the relationship between chainring, crank, spindle and bottom bracket. It’s this clear system approach that equals better drivetrain performance.

Details:

• Use: MTB
• Housing width: 73 mm
• Housing diameter: 42 mm
• Bottom braket type: BB30
• Material bearing: Steel
• Bearing: Sealed industrial bearing
• Spindle diameter: 28.99 mm
• Weight approx.: 82 g