SRAM DUB Pressfit Mountain Bike Bottom BracketIf you need to replace your 30mm or 24mm SRAM crank spindle system, then this DUB Mountain Bike Bottom Bracket is the most unified replacement available. The DUB system uses a 28.99mm crankset spindle/inner bearing diameter and features the benefits of BB30 lightweight bearings whilst benefiting from the bottom bracket systems durability.Precise Bottom Bracket, Spindle and Bearing EngagementThe precise bottom bracket, spindle and bearing engagement is the foundation of DUB technology. This superb merger creates the ultimate in stiffness, reliability and performance without sacrificing weight. SRAM has set a new standard for drivetrain performance, adjustability and reliability by creating a system that is not complicated to set up and fine-tune; meaning everyone can have the highest levels of performance, without the need to spend hours in the workshop/garage.Features: Type: DubMaterial: Steel Compatible Frame Standard: Press-Fit 86mm, 92mm, 121mm Compatible Crankset Standard: SRAM DUB only Weight: 71g (PF92)Part No: BB-DUB-PF-A1Buy SRAM Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.