Bottom Brackets are an essential part of the bicycle that is often overlooked and forgotten, but we saw the BB as another opportunity for performance gains and improved efficiency. For our BB we have developed a seal that achieves a very low level of drag while still retaining excellent protection qualities. Its thinner and low viscosity bearing grease with the correct fill level offers higher durability at high speeds. If you&&';;re running the best crankset on the market, you should have the performance BB to match. BSA 68: BSA (English) Threaded BB, 30mm Spindle, 91g, 68mmPF30 68: 46mm Press Fit, 30mm Spindle, 117g, 68mmBB86: 41mm Press Fit, 30mm Spindle, 66g, 86.5mm386 EVO: 46mm Press Fit, 30mm Spindle, 103g, 86.5mmBBRIGHT: 46mm Press Fit, 30mm Spindle, 91g, 79mmBB30/OSBB Alloy Spacer Kit: 42mm Press Fit, 30mm Spindle, 19g, 68mm Thinner and lower viscosity bearing grease for higher durability at high speedsIn-house testing procedure includes developing a 24-hour continuous water invasion testOffered in a variety of types for better compatibility