The mavic crossride disc 650b wheel has been designed in the new 275 wheel size so you can benefit from the advantages of both 26 and 29 inch wheels the wheel offers exceptional strength and stiffness without adding any unnecessary weight to your bike mavic have used their highest quality qrm sealed cartridge bearings their double sealing bearings with tight c3 internal clearance offers high efficiency with high durability the rims on these mountain bike wheels have been strengthened i