Crupi Precision Tiramic External Euro Bottom Bracket-24mm Portable Lighter and more energy efficient

Lighter and more energy efficient than a standard BB

Rennen Cogs are also Shimano Spline compatible and will work with 8 & 9 speed chains

Also included for your hard earned money is:

4 ounces 280 grams / 9

Crupi Precision Tiramic External Euro Bottom Bracket-24mm Portable Lighter and more energy efficientPrecision sealed tiramic bearings, precision fit with no more plastic dust seals and Precision performance! A much upgraded bottom bracket that features machined tool slots so the tool will not scratch your BB, modified low friction alloy seals with less drag and the lightest weight external bottom bracket offered today resulting in a Precision ride! SPECS Tiramic FRAME FIT Euro BEARING Sealed Weight: 3. 35oz