CeramicSpeed BB90 Trek Shimano Coated Bottom Bracket Black

The CeramicSpeed Bottom Bracket That Delivers Long Life Performance
One of the best things you'll discover about the CeramicSpeed BB90 Trek Shimano Black Coated Bottom Bracket is that the bearings will most likely spin more freely after 10,000 miles and regular maintenance than they did when new, and that's something to really look forward to. These premium ceramic replacement bottom brackets are intended for the Trek family of carbon bikes, and are not compatible with BB30 cranks (only 24mm cranks) - no axle included.

Box Contents
2 x BB90 bearings (coated version) - no cups
2 x Seals
2 x Dust covers with integrated spacers
All Round Grease (10ml syringe)
Sticker Sheet

Designed To Work With 24mm Spindles
The BB90 is the Trek oversized bottom bracket standard and is only found on Trek road bikes. The shell is 90.5mm wide and is designed to work with 24mm spindles and road cranks and have the bearings inside the shell. The CeramicSpeed Bearings come as two bearings, which are then pressed into the frame. The kit comes with two CeramicSpeed bearings. Also included are: dust cover, seals, and a sticker sheet. You must use the spacers included with the kit.

Coated Version Offers Longer Life
Those two bearings consist of either CeramicSpeed Standard or Coated Bearings. Both feature super smooth, super round CeramicSpeed Balls contained in hardened-steel races. The one being represented here is the COATED VERSION which has a metallic coating laid onto the races, making it even smoother and harder, resulting in lower drag and longer life.

Compatible With Shimano & FSA
BB90 is simple and light. The standard is designed to work with 24mm thru-axle spindles. The bearings work with Shimano and other 24mm thru-axle cranks, like FSA.

Reduced Drag
The CeramicSpeed Standard Bearings last at least 3 times longer than other bearings. That's thanks to hardened-steel races and CeramicSpeed Balls that are 100% smoother & 15% harder than the ceramic competition. These bearings have a frictional drag of 0.3-0.4 watts per set, which represents an average 75% drag reduction compared to stock BB's. The CeramicSpeed Coated Bearings reduce drag by 50% compared to Standard Bearings and an improvement in bearing life of 60%.

All Round Grease Comes Installed
To better adjust the performance to your needs, consider the grease you're using. All Round Grease comes installed but can be changed for lower drag Race Day Grease, or higher durability Long Life Grease, which adds a bit of drag but stays in when riding through messy conditions.