NEW Wheels Manufacturing BB30A Frame to Hollowtech II Spindle Outboard Thread Together Bottom Bracket, Black variant-size-73x111 ISO Width (mm): 28

ISO Width (mm): 28

Inner and outer plate chamfering is designed to engage with chainrings and cassettes quickly and provide smooth shifting

Shimano 105 RD-5701 Rear Derailleurs

and is supported by stainless

Front Axle: 12mm Thru x 100mm

NEW Wheels Manufacturing BB30A Frame to Hollowtech II Spindle Outboard Thread Together Bottom Bracket, Black variant-size-73x111 ISO Width (mm): 28Machined 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