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Recently on Cyclingnews.com Giro finale Photo ©: Bettini	SRAM goes big, June 16, 2006 Bearing comparison From l-r: cartridge bearings from a standard ISIS bottom bracket, GXP external bearing BB, and a Howitzer external bearing BB. The oversized dimensions of the Howitzer allow for beefier bearing races and larger ball bearings for greatly enhanced durability. Photo ©: James Huang/Cyclingnews Previous photo    Next photo Latest Photography  Related Story

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