Brand new high-speed ball-bearings produced specifically for XRAY. ID x OD x depth (mm) = 6x13x5. Pair of 2 pieces. Top-quality expert ball-bearings for a super-free, super-smooth drivetrain. These finest quality ball-bearings are fitted with special plastic covers, and are degreased and gently oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, highest threshold and optimum performance.
These ball-bearings have significantly more (and larger) balls in the cage than the regular ball-bearings, making them more resilient under lots. The side covers are easy to eliminate for fast and comfortable servicing. These ultra-high precision ball bearings are created to withstand all extremes at track under racing conditions or even just fun racing. A "must have" product!