CeramicSpeed 61902 Standard Bearing - (6902) MFPN=HBMFN The XM 1700 SPLINE wheels

The XM 1700 SPLINE wheels were designed to dominate the mountain

The Bird Cage rim features an aero cross section with a hollow rim bead to reduce weight

Flexible mounting allows for under seat mounting or elsewhere on the frame

}RaceFace XD-Driver Freehub Body for Trace hubs

CeramicSpeed 61902 Standard Bearing - (6902) MFPN=HBMFN The XM 1700 SPLINE wheelsCeramicSpeed 61902 Standard Bearing (6902). CeramicSpeed 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