Problem Solvers Eccentric Bottom Bracket Shell 54mm diameter 66mm width Silver Challenge Tire 30Tire Type Tubeless ReadyPSI 55

30Tire Type Tubeless ReadyPSI 55

125 35mm Schrader Valve

Internally contoured and relieved 6061-T6 aluminum for minimized weight and maximized strength

}Shimano STEPS SM-CDE70 Top Guide Chain Retention Device and Mounting Plate

Problem Solvers Eccentric Bottom Bracket Shell 54mm diameter 66mm width Silver Challenge Tire 30Tire Type Tubeless ReadyPSI 55Problem Solvers Eccentric Bottom Bracket Shell 54mm diameter 66mm width Silver. The Eccentric Bottom Bracket Shell can be welded into a bicycle frame specifically designed to accept an Eccentric Bottom Bracket. For the utmost in drive train versatility build your frame around this Shell. Problem solved! 54mm inside diameter 59mm outside diameter 66mm standard width 68mm total length Compatible with Eccentric Bottom Brackets Chromoly 4130 Steel