SRAM DUB Italian threaded bottom bracket fits frames with Italian thread bottom bracket shells — the 36mm thread standard used on some road and track frames. It adapts the DUB 28.99mm spindle to Italian-threaded frames with the same tool-serviceable thread-in installation that makes Italian threading practical for high-use builds.

Highlights

  • DUB Italian-threaded bottom bracket for Italian thread frames
  • 36mm Italian thread standard
  • 68mm shell width
  • 28.99mm DUB spindle — compatible with all SRAM DUB cranksets
  • Threaded installation — no press required

Fit and compatibility

Italian-threaded bottom bracket. Fits Italian thread shells (36mm) only — not compatible with BSA English, PF, or BB30 shells. Note: Italian bottom brackets have right-hand thread on both the drive and non-drive sides (opposite to BSA). Compatible with SRAM DUB cranksets only.

Installation. Service. Compatibility. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub.

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Features
  • One oversized spindle to work across every bottom bracket specification
  • Gutter Seal Technology™ seals against the elements
  • Significantly lighter than GXP® system
  • Sealed cartridge bearings available in both stainless and ceramic versions

Specifications

BB-frame interface Italian, Italian (70mm)
Chainline 45.5mm
Spindle length n/a
Support E-type FD No
Crank-BB interface DUB
Bearing type Ceramic, Standard
Spindle diameter DUB
Cup material Aluminum
SKU SRM-BB-DUB-IT-A1
Model # BB-DUB-IT-A1
Barcode # BB-DUB-IT-A1
Brand SRAM