Birzman Bottom Bracket Cup Tool Adapter (for BB9000 & BBR60) Compatio_Enriched Zero Stack

Zero Stack

Chainline: 51

Thermal Fleece fabric with water-shedding PI Dry technology for all-weather performance

The SRAM DUB bottom bracket series has a simple job— to connect crankarms and protect the smooth

Wide Trail casing optimized for 30-35mm rims

Birzman Bottom Bracket Cup Tool Adapter (for BB9000 & BBR60) Compatio_Enriched Zero StackConvenient adapter allows you to use your standard Hollowtech II BB tool on a BB9000 or BBR60 bottom bracket. Constructed of hardened steel Laser etched makings indicate BB type Insert into any Hollowtech II bottom bracket tool for compatibility with newer generation 39mm and 41mm outer diameter Shimano external bottom brackets like those found on Dura Ace 9000, XTR 9000 and Ultegra 6800