BB92 Shimano MTB
五通軸承 ( BB ALPHA )

A bottom bracket built to outlast your frame. BB ALPHA features hardened stainless-steel races hand-built with grade-3 Silicon Nitride ceramic balls, custom-engineered seals and precision dust covers, delivering up to 500% better moisture protection, while still providing ultra-low friction performance. The simplified spacer tube design and lighter cups ensure quick installation and a 10% weight reduction over previous generations. All CeramicSpeed BB ALPHA models are backed by a lifetime warranty.

Precisely pair a 24mm axle crank from Shimano or other brands with a pressfit 41mm bore that is 92mm wide, commonly referred to as BB92 by selecting this high quality bottom bracket from CeramicSpeed. 

In the box:

• BB ALPHA for BB92 Shimano MTB
• UFO Long Life Grease 5 ml
• Decal