Problem Solvers Bushnell Eccentric Bottom Brackets

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The Problem Solvers Bushnell Eccentric Bottom Bracket is the industry leading design for chain tension adjustment on tandem and dedicated single speed bikes equipped with eccentric bottom bracket shells. The classic version features full-body aluminum construction across the shell for maximum surface area friction and additional value.Accepts English threaded bottom bracket cups (1.37 X 24 tpi)Classic full-body design made from aluminumFits BB shells from 53.8 - 54mm I.D. Weight 310 Show more