Sram DUB British Bottom Bracket Size:73mm/28.99mm Transport your rope with care

Transport your rope with care

the Thunderhead Sling is just as ready for what the day might bring as you are

The main compartment can be fully opened to allow quick access at all times

Versatile performance

Retractable Helmet Sling

Sram DUB British Bottom Bracket Size:73mm/28.99mm Transport your rope with careDUB technology features a better engineered bottom bracket and a new spindle design for a more uniform approach to bottom bracket fitment, better sealing against contamination, and a new measure of durability For use with all SRAM DUB cranks and 68 73mm BSA threaded shells Specification BB Shell Thread British BB Shell Width 73mm BB Bearing Steel Crank Spindle Diameter 28. 99mm Interface DUB Primary Color Black Vendor Item # 00. 6418. 015. 000 UPC