SRAM DUB (Durable Unified Bottom Bracket) PressFit30 fits SRAM DUB cranksets into frames with a PF30 shell — 46mm outer diameter, 68mm or 73mm shell width. The DUB spindle standard uses a 28.99mm spindle diameter, splitting the difference between previous standards to reduce weight while maintaining stiffness. These cups are designed for long service life with the correct greasing at installation.

Highlights

• DUB PressFit30 bottom bracket for SRAM DUB cranksets
• Fits PF30 frames — 46mm outer diameter shell
• Available for 68mm and 73mm shell widths
• 28.99mm DUB spindle — lighter than 30mm, stiffer than 24mm
• Serviceable bearings for long-term value

DUB spindle standard

SRAM's DUB standard uses a 28.99mm spindle across Eagle, Force, Rival, Red, and GX cranksets — one spindle diameter that works across the full SRAM road and MTB range. The PressFit30 cup set adapts that spindle to PF30 frames, pressing into the 46mm shell bore and sitting flush with the frame face.

Fit and compatibility

Fits PF30 bottom bracket shells (46mm inner diameter). Compatible with SRAM DUB cranksets only — not compatible with GXP or BB30 spindle standards. Confirm shell width (68 or 73mm) before ordering. Professional press installation and correct bearing grease are recommended.