CeramicSpeed 61903 Standard Bearing - (6903) MFPN=TA2126B Top-Close clamp design

Top-Close clamp design

and for polishing the base after scraping and brushing

Fits all TWIST bases

This gives you plenty of room to equip tires that fit in with the type of terrain you plan on riding on a given day

4° 700c 525

CeramicSpeed 61903 Standard Bearing - (6903) MFPN=TA2126B Top-Close clamp designCeramicSpeed cartridge bearings are an upgrade option for any cycling discipline. These bearings provide extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings. Grade 3 Silicon Nitride balls Hardened steel races Reinforced polymide cage and non contact seal to keep dirt and moisture out High resistance to poor lubrication Can be used for any cycling discipline Sold as each Hand built in Denmark