Sinz Elite XXX bottom brackets, be it the Pro or Expert, are the ultimate upgrade for any 19-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
Retail prices are $59.99 for the Expert and $99.99 for the Pro.