Problem Solvers Bushnell Eccentric Lightweight Bottom Bracket - 68mm x 54mm BLK Model=SL Sprint Stem making gearing changes a breeze

making gearing changes a breeze

Model Circuit Travel/Drop 125mm Diameter 31

Elite level racing tire with smooth center tread and siped and micro-knurled shoulders for improved corner traction

A single wrap-around stretch pocket provides stash space for wrappers

Problem Solvers Bushnell Eccentric Lightweight Bottom Bracket - 68mm x 54mm BLK Model=SL Sprint Stem making gearing changes a breezeThe 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 lightweight version features additional machining and drilling of the alloy body to reduce weight. Accepts English threaded bottom bracket cups (1. 37 X 24 tpi) Lightweight cut out body design made from aluminum Fits BB shells from 53. 8 54mm I.