The Problem Solvers GXP Adapter Kit is made specifically for use with:
Problem Solvers BB30/PressFit 30 Adapter Kit and/or Problem Solvers Eccentric 46 Bottom Bracket
Problem Solvers BB30/PressFit 30 Adapter Kit and/or Problem Solvers Eccentric 46 Bottom Bracket
. Spacer kit for using GXP cranks with the Problem Solvers BB30/PF30 Adaptor (CR0096), or the E46 PressFit 30 Bottom Bracket (CR0098)