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SRAM BB DUB English/BSA (MTB) 83mm Bottom Bracket

• DUB technology for superior durability and stiffness - SRAM's DUB spindle interface features a uniform 28.99mm diameter that simplifies compatibility while delivering exceptional stiffness and strength for efficient power transfer under demanding mountain bike conditions

• 83mm shell width for boost and super boost frames - Specifically designed for wider MTB bottom bracket shells (83mm), accommodating modern boost spacing and super boost frame standards common on trail, enduro, and downhill bikes

• English/BSA threaded compatibility - Standard threaded design (1.37" x 24 TPI) ensures secure installation and compatibility with the majority of modern mountain bike frames featuring threaded bottom bracket shells

• Sealed cartridge bearing design for all-weather performance - High-quality sealed bearings protect against water, mud, dirt, and trail debris, providing smooth rotation and extended service life even in the harshest riding conditions

• Lightweight yet robust construction - Engineered to minimize weight while maintaining the structural integrity needed to withstand high torque loads, aggressive riding, and the impacts associated with technical mountain biking

Brand: Sram

Type: DUB English

Availability: In stock Out of stock

Delivery: 2-3 working days

Product variants

Regular price: £33.89
Sale price: £33.89
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Description

SINGULAR FOCUS. BETTER SOLUTION.

The new SRAM DUB™ bottom bracket series has a simple job-connect your crankarms and protect the smooth, long-lasting application of power to your drivetrain. To allow that singular focus, we've engineered the DUB™ spindle to be the one true unifying component. One oversized spindle to work across every bottom bracket standard. For better crankarm compatibility. For better protection from the elements. For longer-lasting performance. To be stronger, smoother, simpler. Now, back to the ride.

THINGS TO REMEMBER

One oversized spindle to work across every bottom bracket standard
Gutter Seal Technology™ drastically improves sealing against the elements
Significantly lighter than GXP® system

FEATURES AND BENEFITS

Gutter Seal Technology™
Sealed cartridge bearings

SPECIFICATIONS

BB-frame interface English/BSA 100mm, English/BSA 73mm, English/BSA 83mm
Crank-BB interface DUB
Bearing type Standard
Spindle diameter DUB
Spindle length n/a
Chainline n/a

Support E-type FD n/a

Cup material Aluminum, Steel

Shipping & Returns

Our Promise

All orders are carefully prepared and dispatched within 1-2 business days. Once your package is on its way, you will receive a confirmation email with a tracking number so you can follow its journey.

Same‑Day Dispatch

Orders placed before 2pm are dispatched the same day via Royal Mail Tracked 24.

If there are any stock issues, we will contact you by phone or email to update you and reorganise delivery.

Shipping Costs

• Orders over £50 qualify for free shipping.

• Orders under £50 have a flat delivery fee of £3.00.

Letterbox‑Friendly Items

Any items that can be delivered through a standard letterbox will be sent via Royal Mail 24 for convenience.

Optional Special Delivery Upgrade

For urgent orders, you can upgrade to Royal Mail Special Delivery Guaranteed by 1pm.

This upgrade is available at checkout for orders placed before 2pm.

FAQ

Q: What is the difference between this 83mm bottom bracket and the standard 68/73mm version? A: The 83mm shell width is designed for modern mountain bikes with boost (148mm rear) or super boost (157mm rear) spacing, which require a wider bottom bracket shell to accommodate the increased chainline. Standard 68/73mm shells are found on older MTB frames and most road bikes. Always check your frame specifications before purchasing.

Q: How do I know if my frame requires an 83mm bottom bracket? A: Measure the width of your frame's bottom bracket shell from one side to the other. If it measures 83mm (approximately 3.27 inches), you need this bottom bracket. Frames with boost or super boost rear spacing typically use 83mm shells. Check your frame manufacturer's specifications or consult your bike's documentation to confirm.

Q: Is this bottom bracket compatible with all SRAM DUB cranksets? A: Yes, this bottom bracket is compatible with all SRAM DUB cranksets including GX Eagle, X01 Eagle, XX1 Eagle, and DUB-specific models. The DUB system uses a uniform 28.99mm spindle diameter across all cranksets, ensuring compatibility regardless of the specific model or groupset level.

Q: How often should I service or replace this bottom bracket? A: Service life varies based on riding conditions and frequency. In typical trail riding conditions, expect 3,000-8,000 miles before replacement. Aggressive riders in wet, muddy conditions may need replacement sooner (2,000-4,000 miles), while riders in dry conditions with regular bike cleaning can exceed 8,000 miles. Replace when you notice rough rotation, lateral play, creaking, or resistance when spinning the cranks.

Q: What tools and torque specifications do I need for installation? A: You'll need a SRAM DUB-compatible bottom bracket tool (16-notch), a torque wrench, and waterproof grease for the threads. Torque specifications are typically 25-35 Nm (18-26 ft-lbs) for the threaded cups—consult SRAM's installation guide for exact specifications. Apply grease to the threads and face of the shell to prevent creaking and ensure proper installation. If you're unfamiliar with bottom bracket installation, professional installation is recommended.