Shimano is one of the few manufacturers who has yet to embrace a 30 mm bottom bracket spindle standard, and for BB30 frame owners who wish to equip Shimano cranksets, this creates a compatibility problem. With their BB30 bottom bracket adapter cups, HSC presents a high quality, semi permanent solution to this problem. This aluminum adapter cup system, equipped with hybrid ceramic bearings, simultaneously widens the shell and reduces the spindle interface of a BB30 bottom bracket to allow full compatibility with Shimano Hollowtech II cranksets.
For those currently riding Sram or Truvativ cranks, HSC has developed a high quality bottom bracket designed to enhance overall wear life while simultaneously reducing friction. If upgrading your stock BB to a highly performance tuned ceramic option is the next step in your build process, look no further.
HSC BB30 adapters are compatible with either Shimano Hollowtech II or Sram / Truvativ GXP cranksets. Please feel free to contact us directly for technical questions. HSC provides an alternative solution for use with a pre-installed BB30 bottom bracket with their BB30 Reducer Sleeves.
To avoid frame damage, we recommend that these BB30 bottom bracket adapters be professionally installed using a proper bearing press.