CeramicSpeed Ceramic MTB Bottom Bracket - BB86 to 24mm (Shimano)

CeramicSpeed Ceramic MTB Bottom Bracket - BB86 to 24mm (Shimano) Info

In many respects, the BB86 standard is the easiest on the market, especially when you’re installing 24mm-spindled cranks. This CeramicSpeed kit allows you to set up Shimano, FSA, and Rotor cranks on your BB86 bottom bracketed mtb.

BB86 is the Shimano standard. For mtb’s it’s sometimes called BB92, but in both cases, the design is the same. The shell’s inner diameter is 41mm and the cups are stepped to fit inside the shell without stops or snap rings. BB86 means the shell width is 86.5mm, aka the road width. BB92 means it’s 91.5mm wide, aka the mountain bike width. The cups are stepped and pressed right in.

Shimano thru-axled cranks always have a 24mm spindle diameter. Many of FSA’s and Rotor’s offerings have this diameter as well.

CeramicSpeed utilizes Grade 3 Silicon Nitride balls that possess the best possible surface finish and roundness. In testing, the balls are 400% smoother, 128% harder, and 58% lighter than standard steel balls found in most bike components. They’re more than 100% smoother and 15% harder than standard ceramic balls. The balls are installed into hardened steel races in dust-free clean rooms and then checked again before assembly is complete. Not only is low friction the result, but so is increased bearing life. Like three to five times longer than standard bearings.

The CeramicSpeed bearings are pressed into aluminum cups manufactured by Rotor of Spain. And the bearings are pressed into place at CeramicSpeed in Denmark.

Tech geeks who are also speed fiends obsess over ceramic bearings because the right design can have dramatically less frictional resistance than standard steel bearings. CeramicSpeed is an innovator in bearing technology. They mastered the use of ceramic ball bearings pressed into hardened steel races for both reduced friction and improved durability. You can go faster with less maintenance. Great things both. These are the reasons why pro racers seek out ceramic bearings. CeramicSpeed has the pro teams coming to them, begging for bearings. Even the ones they don’t sponsor might well be buying them in order not to be left behind.

Another step they take in assuring the lowest-possible frictional drag is using grease they designed as lubricant. It comes in the bearings and a syringe comes with the bearings as well. Ceramic bearings are so hard that they can crush grit that works its way into the races. And ceramic balls don’t rust. Still, clean grease is the best way to insure the lowest drag and the longest life. The grease utilized here has a higher viscosity than the grease they install in road bottom brackets, so it will stick to the bearings better, insuring protection from the elements.

The kit comes with the bearings pressed into cups, CeramicSpeed’s mtb grease, dust cover, spacers, and sticker sheet.

When you’re looking to ride away from your previous best and the competition, the CeramicSpeed BB86 Shimano MTB bottom bracket allows you to install your favorite 24mm-spindled crank on your BB86/BB92 off road wonder.