Controltech BB30 Bicycle Bottom Bracket 42mm Sealed-bearing BB for 30mm spindle
COMPATIBILITY: Fits any of the following BB30 ∅42mm Press-Fit BB Shells BB Shell Width:68/73mm. – Lighter than traditional thread-in type bottom brackets.
OMNI Racer Worlds Lightest TiN Titanium Ceramic Bearing: 6902, 61902 15x28x7mm
OMNI Racer, World’s Lightest cycling components. SUPER SMOOTH TiN CERAMIC BEARINGS : Nano-technology Titanium Nitride coated ABEC 5 Grade bearing races with Si3N4 Grade 3 ceramic balls. Lighter stiffer & smoother and will last longer than other ceramic and steel bearings.