Birzman Shimano BB Socket (Hollowtech II) CheckoutSpec= Recon Silver TK C1 non-Boost 45mm chainline

45mm chainline

52 Fork Oil Weight N/A

Now available in a variety of Anodized colors

Does not contain any materials that are prohibited by WADA and is free from parabens and formaldehyde

Race worthy components priced for the casual cyclist

Birzman Shimano BB Socket (Hollowtech II) CheckoutSpec= Recon Silver TK C1 non-Boost 45mm chainlineCompatible with Shimano Hollowtech II or other 16 notch 44mm external bearing bottom bracket cups Also compatible with 16 notch rotor disc lockrings (incl. E Thru axle hubs) 1 2 inch drive compatible TECH SPECS description Shimano BB Socket (Hollowtech II) compatibility Shimano Hollowtech II or other 16 notch