Sram DUB bottom bracket

Sram have announced a major revision to their mountain bike bottom brackets, a change that's intended to increase its longevity, as well as simplify the lineup. Called DUB (Durable Unified Bottom bracket), the most significant update is the change to a 28.99 mm spindle. With DUB, they now offer four bottom brackets that will fit all of the existing frame standards.

Features

• Sram DUB™ is the single replacement for 30 mm and 24 mm BB spindles options.
• DUB™ bottom brackets fit all frame shell standards.
• DUB™ does not introduce any new frame shell standards.

English thread (BSA)

• BB shell size: 68/73 mm (BSA).
• Internal diameter: 34.8 mm.
• Spindle: DUB (28.9 mm).
• Improved tool engagement.
• Gutter Seal Technology.
• Sealed cartridge bearings.
• Seals included.

PressFit BB92 MTB

• Press Fit bottom bracket 89.5/92 mm without thread.
• Internal diameter: 41 mm.
• Spindle: DUB (28.9 mm).
• Gutter Seal Technology.
• Sealed cartridge bearings.
• Seals included.

BB30

• Press Fit bottom bracket 73 mm without thread.
• Internal diameter: 42 mm.
• Spindle: DUB (28.9 mm).
• Gutter Seal Technology.
• Sealed cartridge bearings.
• Seals included.

PressFit PF30

• Press Fit bottom bracket 73 mm without thread.
• Internal diameter: 46 mm.
• Spindle: DUB (28.9 mm).
• Gutter Seal Technology.
• Sealed cartridge bearings.
• Seals included.

PressFit BB86

• Press Fit bottom bracket 86.5 mm without thread.
• Internal diameter: 41 mm.
• Spindle: DUB (28.9 mm).
• Gutter Seal Technology.
• Sealed cartridge bearings.
• Seals included.

PressFit BB386

• Press Fit bottom bracket 86.5 mm without thread.
• Internal diameter: 46 mm.
• Spindle: DUB (28.9 mm).
• Gutter Seal Technology.
• Sealed cartridge bearings.
• Seals included.