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BB90 Bottom Bracket for Trek SRAM GXP
Trek developed its bb standard to optimize its frame designs.
BB90 has a 90.5mm shell width and 37mm inner diameter and is designed so that the bearings of external cups can hide within the frame.
The CeramicSpeed kit comes with two bearings, which are then pressed into the frame. Those two bearings consist of either CeramicSpeed Standard or Coated Bearings. Both feature super smooth, super round CeramicSpeed balls rotating in hardened-steel races.
The Coated version has a metallic coating on the races, making it even smoother and more complex, resulting in longer life and lower drag.
The BB90 standard is limited to Trek. This kit allows 24/22mm thru-axle cranks from Quarq and SRAM to mate with your Trek.
Standard Bearings last at least 3 times longer than other bearings, resulting from hardened-steel races and ceramic 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 boasts an average 75% drag reduction compared to stock bb’s.
The Coated Bearings increase bearing life by 60% and reduce drag by 50% compared to Standard Bearings.
To better modify the performance for 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.
What is Coated?
A lifetime warranty covers our coated products. The unique coating formula is a metallic layer that covers the bearing races and makes them 75% harder than steel. Thanks to this, they are highly resistant to corrosion, and the coating provides even lower friction than our standard bearings. Even if the bearing is contaminated with degreaser, water, or mud, the risk of bearing failure due to corrosion is negligible if you choose the coated version.
Installation of BB90 Bottom Bracket for Trek SRAM GXP
Installation of SRAM GXP cranks on CeramicSpeed Bottom Brackets.
Maintenance of CeramicSpeed PF4130 Road and MTB Bottom Bracket
We recommend that you follow our instructions on maintaining your CeramicSpeed Bottom Brackets to achieve the lowest friction and the best longevity.
SKU# 101375
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