Sinz Elite is now offering two new external-bearing bottom brackets under the XXX brand name-the same name used for the hot, new, hollow-forged crankset. Both bottom brackets feature forged and CNC-machined external aluminum cups and are compatible with Sinz Elite XXX, Shimano DXR, XTR, and other 24-millimeter spindle cranksets and fit standard English thread (1.37" x 24T) 68- and 73-milimeter bottom bracket shells.
The Pro model bottom bracket comes in black or white and has the added bonus of precision tapered roller bearings. The super-durable bearings will provide longer bottom bracket life even under extreme use. The Expert model comes in red, blue, black and white and rolls on super-high-precision sealed bearings, but has a weight of 89 grams compared to 118 grams for the Pro.