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Installation Instructions
Installation Video
Specifications
These BBInfinite Threaded Bottom Bracket Cups work with all Shimano HollowTech road cranksets on the market, from Tiagra to Dura Ace.
This road bike bottom bracket features alloy cups that are MilSpec MIL-A-8625 Type II anodized for extreme durability. Polymer labyrinth
5.0
13 ratings
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Looks and spins amazing! Install was easy, no proprietary tools. Quality was obvious out of the box. I replaced the stock Shimano Dura Ace bottom bracket and the difference in resistance is incredible.
Jamie · August 14, 2026
They run smooth and work very well for bmx racing. Plus customer service is first class. I ordered a year and half ago and took apart my supercross bmx bike yesterday for inspection because of some noises. Come to find out the drive side cup was split. Sent a picture to bbinfinite and they shipped a replacement out next day. Will be back when my son moves to 2 piece cranks.