SRAM DUB PF92 89/92mm (55mm Chainline)
SRAM

SRAM DUB PF92 89/92mm (55mm Chainline)

$50.00
In Stock

SRAM DUB PF92 press-fit bottom bracket engineered for BB92 frames. DUB 28.99mm spindle, sealed steel bearings and 55mm chainline give low friction and reliable chain alignment for modern mountain 1x setups.

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Product Details

Overview & Technology

SRAM's DUB PF92 combines the DUB spindle standard with a press-fit BB92 cup set to deliver a compact, durable bottom bracket for modern mountain bikes. The unit uses a 28.99mm DUB spindle diameter matched to sealed steel bearings mounted in 41mm press-fit cups — a configuration optimized for reliable power transfer and long service life. The 55mm chainline variant keeps the drivetrain centered for many contemporary 1x and Boost frame geometries, reducing chain wear and improving shifting consistency. Finished in corrosion-resistant black, the PF92 is built for everyday trail use and easy servicing in the workshop.

Key Features & Construction

Purpose-built hardware: The PF92 features 41mm press-fit cups for BB92 shell IDs, a 92mm shell width, and SRAM's DUB interface with a 28.99mm spindle diameter. Bearings are sealed steel for robust durability in muddy, wet conditions. Real-world benefits: • Sealed steel bearings reduce maintenance and tolerate harsh trail conditions. • 28.99mm DUB spindle interface minimizes creaks and improves spindle-to-bearing fit. • 55mm chainline improves chain retention and alignment on modern 1x drivetrains. • Compact press-fit design saves weight and simplifies frame integration.

Fit & Compatibility

This bottom bracket is specifically designed for frames with a BB92 press-fit shell and a 92mm shell width (compatible with nominal 89–92mm shells). Cup outer diameter is 41mm, so confirm your frame's BB shell ID matches the PF92 specification before purchasing. The unit is intended for use with SRAM DUB cranksets (28.99mm spindle). It is not compatible with 24mm Shimano, 30mm spindle standards, or threaded bottom bracket shells without the correct adapters. Always verify your crank spindle standard and the frame BB specification prior to installation.

Who This Is For

This BB suits mountain riders, mechanics, and builders running SRAM DUB cranksets on modern trail, all-mountain and cross-country frames with BB92 shells. It's ideal if you want a low-maintenance, OEM-compatible bottom bracket with a 55mm chainline for improved drivetrain alignment on 1x setups. If you value reliability on wet, muddy rides and prefer a proven sealed-steel bearing solution that’s simple to service and replace, the SRAM DUB PF92 is a practical choice.

Key Features

  • ✓ SRAM DUB interface with 28.99mm spindle for DUB crank compatibility
  • ✓ Press-fit BB92 cups (41mm OD) for frames with 89–92mm shell widths
  • ✓ 55mm chainline tuned for modern 1x and Boost frame geometries
  • ✓ Sealed steel bearings deliver durability in wet and muddy conditions
  • ✓ Black anodized cups resist corrosion and blend with modern framesets
  • ✓ Low-friction design for consistent power transfer and quieter pedaling
  • ✓ Compact, lightweight assembly — shipping weight 0.25 lb
  • ✓ SRAM Model ID BB-DUB-PF-A1, MPN 00.6418.016.005, SKU 380535

Specifications

BB Shell Type BB92
BB Shell Width 92mm
BB Bearing Steel
Crank Spindle Diameter 28.99mm
Interface DUB
Cup Diameter 41mm
Primary Color Black

Product Identifiers

Vendor Item # 00.6418.016.005
UPC 710845857928

Frequently Asked Questions

Is this bottom bracket compatible with my SRAM DUB crankset?

Yes — the DUB PF92 is designed for SRAM DUB crank spindles (28.99mm). Match the PF92 with a frame that has a BB92 press-fit shell and 92mm shell width for correct fit and chainline.

Can I use this BB with non-SRAM cranks (Shimano, Race Face, etc.)?

Generally no. The PF92 uses SRAM's 28.99mm DUB spindle interface, which is specific to SRAM DUB cranks. Other crank spindle standards like Shimano 24mm or 30mm require their own BBs or specific adapters.

What tools are required to install the PF92 press-fit bottom bracket?

Installation requires a proper press-fit bearing press or drift tool and an arbor/adapter sized for 41mm cups. Clean and face the BB shell if necessary, apply light grease to the cups, and press straight to avoid bearing damage. A professional press-fit tool is strongly recommended.

How often do the bearings need maintenance or replacement?

Sealed steel bearings are low-maintenance but not maintenance-free. Inspect for play or roughness after heavy seasons; depending on conditions and mileage, bearings may need replacement every 1–3 years. Avoid high-pressure water blasting the BB area to prolong bearing life.

Will this work in a threaded frame with adapters?

The PF92 is a press-fit unit designed for BB92 shells. Threaded frames require threaded bottom bracket units or adapters explicitly designed to accept press-fit cups — check for a compatible adapter from SRAM or third-party manufacturers before attempting installation.

What does 55mm chainline mean for my bike?

A 55mm chainline positions the chainring relative to the centerline of the bike, optimized here for many modern 1x and Boost setups. It improves chain retention and shifts performance by aligning the chainring with the cassette range used on those frames.

Buying Guide

When choosing a press-fit bottom bracket, start by confirming your frame's BB shell type (diameter and width) and your crank spindle standard. For SRAM DUB cranks, a DUB-specific BB like the PF92 guarantees correct spindle fit and the intended chainline. Decide between bearing materials and sealing levels based on your riding conditions; sealed steel bearings are durable and cost-effective for most mountain riders. Finally, plan for proper installation — press-fit BBs require the right tools and technique to avoid creaks and premature wear.

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