SRAM DUB BB30 Road Wide 73mm
SRAM

SRAM DUB BB30 Road Wide 73mm

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SRAM DUB BB30 Road Wide 73mm press-fit bottom bracket delivers a sealed DUB interface for SRAM 28.99mm spindles. Designed for BB30 road shells with a 73mm width and durable steel bearings.

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Product Details

Overview & Technology

SRAM's DUB BB30 Road Wide 73mm brings the DUB spindle standard to BB30 road frames with a 73mm shell width. This unit is built around a 28.99mm DUB interface to match SRAM DUB crank spindles and uses sealed steel bearings for long life and predictable performance. The cups sit in the 42mm press-fit bore standard to BB30 shells and finish in a low-profile black. The DUB platform is engineered to combine thin-wall crank spindle durability with a simple, serviceable press-fit bearing solution. With a compact interface and sealed steel bearings, this BB offers reliable power transfer and straightforward serviceability for road riders who want SRAM DUB compatibility in BB30 frames.

Key Features & Benefits

Precision interface: 28.99mm DUB spindle interface ensures correct fit and alignment with SRAM DUB cranksets. That precise fit reduces eccentric loading and improves bearing life and pedaling efficiency. • BB Shell Compatibility: Specifically for BB30 frames with a 73mm shell width. • Bearings: Sealed steel bearings for durable, low-maintenance service life in road conditions. • Cup Diameter: 42mm cup OD for a snug press-fit into BB30 bores. • Low profile: Compact design keeps Q-factor and chainline consistent for road setups.

Fit, Installation & Compatibility

This unit is designed for frames with a BB30 shell (42mm bore) and a 73mm shell width. It's built to accept SRAM DUB road crank spindles (28.99mm). It is not a universal adapter — spindles that are 24mm (Shimano) or 30mm will require specific adapters or different bottom bracket standards. Press-fit installation requires proper tools: a BB press, correct 42mm cup drivers, and attention to shell faces and tolerances. We recommend checking frame tolerances and, if in doubt, having a qualified mechanic press the cups to avoid creaks or damage. Lightly grease the outer diameter of the cups and the shell mating faces to aid installation and future removal.

Who This Is For

Ideal for road cyclists who own BB30 frames and want to run SRAM's DUB cranks without adapters. It's a go-to choice for bike shops, mechanics, and home mechanics replacing worn bearings or converting a BB30 frame to DUB compatibility. If you race, train hard, or simply want a robust sealed bearing solution for your BB30 road frame, this SRAM DUB BB30 Road Wide 73mm gives reliable power transfer and easy servicing at a reasonable cost.

Key Features

  • ✓ Specifically engineered for BB30 frames with 73mm shell width
  • ✓ DUB interface fits SRAM 28.99mm spindle for perfect alignment
  • ✓ Sealed steel bearings for durable, low-maintenance road use
  • ✓ 42mm cup outer diameter for secure press-fit into BB30 shells
  • ✓ Low-profile design preserves chainline and Q-factor accuracy
  • ✓ Black finished cups for a subtle factory appearance
  • ✓ Lightweight, compact assembly with easy serviceability

Specifications

BB Shell Type BB30
BB Shell Width 73mm
BB Bearing Steel
Crank Spindle Diameter 28.99mm
Interface DUB
Cup Diameter 42mm
Primary Color Black

Product Identifiers

Vendor Item # 00.6418.017.002
UPC 710845854354

Frequently Asked Questions

Will this bottom bracket fit my frame?

This BB is built for BB30 shells with a 42mm bore and a 73mm shell width. Check your frame specification — if your shell is not BB30 or your width is different, this unit will not fit without adapters or a different BB model.

Which cranks are compatible with the SRAM DUB BB30?

It's designed for SRAM DUB cranks with a 28.99mm spindle diameter. Spindles of other diameters (for example Shimano 24mm) are not compatible unless you use a dedicated adapter or a different BB standard.

Do I need special tools to install this press-fit bottom bracket?

Yes — a proper BB press and 42mm cup drivers are required for safe installation. Correct press-fit technique and face tolerances are important to avoid misalignment and creaks; if you're not confident, have a pro mechanic install it.

How long will the bearings last?

Bearing life depends on riding conditions and maintenance. Sealed steel bearings are durable for road use and can last many thousands of kilometers under normal conditions. Avoid bearing contamination from water and grit and inspect periodically for play or roughness.

Can this cause creaks after installation?

Creaks are most often caused by improper shell preparation, poor press-fit technique, or mismatched tolerances rather than the BB itself. Ensuring clean, squared shell faces, correct press tools, and light grease on cup ODs minimizes the chance of noise.

Are ceramic bearings an option?

This unit uses sealed steel bearings. Ceramic bearing upgrades exist from third-party vendors, but you should ensure exact compatibility with the 42mm cup and DUB interface before purchasing and installing ceramic replacements.

Buying Guide

When choosing a press-fit bottom bracket for a road bike, first identify your frame's shell standard and width. For BB30 frames with a 73mm shell width, the SRAM DUB BB30 Road Wide 73mm provides a direct-fit solution for SRAM DUB cranksets, matching the 28.99mm spindle diameter without adapters. Consider bearing material — sealed steel bearings balance durability and cost for typical road use; ceramic bearings offer lower friction but higher expense and more careful handling. Also factor in installation: press-fit units demand the right tools and proper shell preparation. If you want worry-free performance, either ensure correct installation technique (press with recommended drivers, grease cup ODs, and face the shell) or budget for professional fitting.

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