This is the SRAM DUB BSA 83mm Ai Bottom Bracket, External Cup BB, British, 28.99mm.

The 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 specification: 

• For better crankarm compatibility. 
• For better protection from the elements. 
• For longer-lasting performance. 
• To be stronger, smoother, simpler.

Features:

• One oversized spindle to work across every bottom bracket specification
• Gutter Seal Technology™ seals against the elements
• Significantly lighter than GXP® system
• Sealed cartridge bearings available in both stainless and ceramic versions

Product Specifications:

Shipping Dimensions:

• Shipping Length (L): 4.7"
• Shipping Width (W): 3.2"
• Shipping Height (H): 2.1"
• Shipping Weight: 0.2 lb

Vendor Item No:

• 00.6418.031.000