NEW Wheels Manufacturing BB30A Frame to Hollowtech II Spindle Outboard Thread Together Bottom Bracket, Black type_rear-shocks Offset Velcro closure straps

Offset Velcro closure straps

44mm head tube

Then if you like you can mount it on your bike for longer rides

Toptube bag mounts on all sizes

Hitch Type: 1-1/4" Receiver

NEW Wheels Manufacturing BB30A Frame to Hollowtech II Spindle Outboard Thread Together Bottom Bracket, Black type_rear-shocks Offset Velcro closure strapsMachined aluminum shell threads together for precise bearing alignment and frame fit, reducing bottom bracket creaking and premature bearing wear. Replaceable Enduro bearings Made in the USA Defined Color: Black Bottom Bracket Shell I. D.: 42 Spindle Interface Type: Shimano Hollowtech II Weight: 119 BB Shell Width (mm): 73 BB Frame Interface: BB30a