Gusset looked at the common premature failure of cartridge bearings on threaded Euro style bottom brackets and developed a 'semi-cartridge unit' system that effectively 'assembles itself' inside the frame.
The patent pending Gusset I.A.S.C. BB system installs easily with a UN type tool to give optimised bearing adjustment and additionally forms an effective dirt and water internal shield.
Waffen IASC BB system for 22mm axles.(Note: smaller bearings are used compared to Pigmy IASC, and thus bearing durability is reduced).
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