If you want eliminate as much resistance out of your drivetrain as possible, start with a Stay Strong ceramic bottom bracket. The BB86 style of bottom bracket suits a wide range of frames, and of course is the perfect fit for your Stay Strong V5.1 pro frame. 

These are just some of the advantages of running ceramic bearings in your moving parts like the bottom bracket on your bike:

Lower Friction and Rolling Resistance: Ceramic balls are harder and smoother than steel. This decreases energy loss, reduces heat generation, and cuts rolling resistance by roughly 10% to 15%

Superior Corrosion Resistance: Materials like silicon nitride or zirconia do not rust, oxidize, or react with water, salt water, or harsh chemicals, making them ideal for marine, medical, or chemical processing equipment

Lighter Weight: Ceramic rolling elements are roughly 40% to 60% lighter than steel equivalents, which helps reduce overall rotational mass in performance applications like aerospace or cycling