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CeramicSpeed 61903 Coated Bearing - (6903) Coated Bearing Race

Regular price $177.00 USD
Regular price $177.00 USD Sale price $177.00 USD
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We’re a mission-driven bike shop based in Colorado. Every sale helps refurbish and donate bikes to those in need through Bicycles for Humanity Colorado.

Each item has been professionally inspected, thoroughly cleaned, carefully refurbished, and is ready for immediate use.

CeramicSpeed 61903 Coated Bearing - (6903) Coated Bearing Race

Riders deserve gear that disappears into the ride, not friction that fights every pedal stroke. The CeramicSpeed 61903 coated bearing system minimizes drag with ultra-low friction and a hard-wearing coated race, translating to smoother acceleration, improved power transfer, and longer intervals between maintenance. Hand built in Denmark and backed by a Limited Lifetime Warranty, these bearings stand up to tough conditions while delivering consistent, reliable performance.

Who is this for?

Precision-minded cyclists seeking every watt of efficiency, racers upgrading for durable long-term performance, and riders who demand reliable bearings across road, gravel, and track.

specifications details
Bearing I.D. (mm) 17
Bearing O.D. (mm) 30
Thickness 7
Material Ceramic
Manufacturer Number 61903 (6903) coated
Ball Material Grade 3 Silicon Nitride balls
Races Coated races provide extreme hardness and corrosion resistance
Cage Reinforced polymide cage
Seal Non-contact seal
Lubrication resistance High resistance to poor lubrication
Discipline Can be used for any cycling discipline
Warranty Limited Lifetime Warranty

Each item is professionally packed and shipped next day. Select in-store pick-up at checkout and visit us if you are local!


Bearing I.D. (mm) 17
Manufacturer Number 61903 (6903) coated
Bearing O.D. (mm) 30
Material Ceramic
Thickness 7
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