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 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.

Sinz Elite XXX bottom brackets, be it the Pro or Expert, are the ultimate upgrade for any 24-millimeter spindle crankset. Buy the Pro for extra long bottom bracket life or choose the Expert if your priority is low weight. Either way, you'll get a killer, high-quality, silky smooth bottom bracket.

SINZ Elite XXX Pro BB:

• Super-Durable Precision Taper Roller Bearings
• Forged & CNC-Machined Aluminum Cups
• Sinz Elite XXX & Shimano Compatible
• BSA 1.37" x 24T, Fit 68 & 73-mm BB Shells
• 118 grams

SINZ Elite XXX Expert BB:

• High-Precision Sealed Bearings
• Forged & CNC-Machined Aluminum Cups
• Sinz Elite XXX & Shimano Compatible
• BSA 1.37" x 24T, Fit 68 & 73-mm BB Shells
• 89 grams