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SRAM DUB BB30 bottom bracket

SRAM bottom bracket. Needs from your bike: Bottom bracket shell. Provides: Crank spindle.

The SRAM DUB BB30 bottom bracket is a bottom bracket (component). It requires 1 thing of a bike — Bottom bracket shell — read from SRAM. It provides Crank spindle to the parts that mount on it. On every bike page its verdict is computed from those requirements against the bike's cited facts: when a fact is missing the answer is "unknown", never a guess.

Requires — Bottom bracket shellBB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm)
Provides — Crank spindleSRAM DUB (28.99 mm)
Does this part fit my bike?
Find your bike under "Fits these bikes" below, or open your bike's "Drivetrain" region page. The verdict there is computed from this part's requirements against the bike's cited facts — with its confidence and sources.
What does "does not fit" mean here?
That a fact on file for the bike contradicts a requirement of this part — a confident no, with both values shown.

Standards

  • BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm)
  • SRAM DUB (28.99 mm)

Needs from your bike: Bottom bracket shell: BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm)

Provides: Crank spindle: SRAM DUB (28.99 mm)

Bottom bracket

Find this part

Choose the right variant and check the fit for your bike.

Fits these bikes

Brompton C Line 12-speed (2025)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Defy Advanced 2 (2025)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Escape 3 (2024)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Fathom 29 2 (2022)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Propel Advanced 2 (2027)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Reign 29 2 (2021)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Revolt Advanced 2 (2025)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Roam 2 Disc (2021)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Talon 2 (2025)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant TCX Advanced Pro 2 (2023)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant Trance X 29 2 (2022)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Giant XTC Jr 24 (2015)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Kona Sutra (2025)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Liv Flourish 2 (2017)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

State Bicycle Co. Core-Line (2024)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

woom GO 4 (2025)unknown · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike nothing on file · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — not on file

Sources:

Canyon Grail CF SL 7 (2025)does not fit · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike Press-fit BB86 (41 mm bore, 86.5 mm) (single-source) · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — mismatch

Sources:

Canyon Ultimate CF 7 (2025)does not fit · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike Press-fit BB86 (41 mm bore, 86.5 mm) (single-source) · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — mismatch

Sources:

Giant Glory Advanced (2025)does not fit · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike BSA / English threaded, 83 mm (single-source) · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — mismatch

Sources:

Giant Talon E+ (2026)does not fit · confidence: single-source
Why? The facts we compared (1 dimension compared)
  • Bottom bracket shell: bike Mid-drive motor (no conventional shell) (single-source) · part BB30 (42 mm bore, 68 mm) or BB30, 73 mm or BBright (Cervélo, 46 mm bore, 79 mm) — mismatch

Sources:

See all 23 bikes

Sources

The spec sheets we read. Every fact above cites one of them.

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