CHRIS KING BB Fit Kit for DUB Cranks

Fit Kits and additional spacers for using SRAM DUB 28.99mm cranksets with Chris King bottom brackets labeled “30.”

Fit Kit #1 DUB A — PBB079

• Covers DUB mountain fitments
• Covers DUB Road fitments used with T47 bottom brackets
• Compatible BB family: ThreadFit™ 30 / T47 30x / T47 30i, with setup varying by crank and shell width

Fit Kit #2 DUB B — PBB080

• For DUB Road cranks used with ThreadFit™ 30
• The 68mm BSA DUB Road setup includes the required 68mm center sleeve

Additional parts

• PBB008B: 2.5mm Cup Spacer for ThreadFit™ 30
• PBB078: 2.5mm Cup Spacer for T47
• PBB081: DUB Super Boost+ Spindle Spacer Kit

Important: Some 68mm-shell DUB MTB setups use two PBB008B spacers with BSA or two PBB078 spacers with T47. The official Fit Guide also specifies PBB092 for certain T47 30i 92mm DUB setups, with PBB081 added for 92SB+. PBB092 is not currently listed as a Circles product, so please contact us before ordering for these applications.

Fit Kit spacer setup varies by BB shell width, crank model, and Road/MTB/Wide/Super Boost+ configuration. Confirm the final setup with the current Chris King Fit Guide.

Chris King official support, Bottom Bracket Manual & Fit Guide