Brand new high-speed ball-bearings manufactured especially for XRAY. ID x OD x thickness (mm) = 5x9x3. Set of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with unique rubber covers, and are degreased and gently oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, greatest tolerance and optimum performance.
These ball-bearings do have more (and larger) balls within the cage compared to the regular ball-bearings, making them much more resilient under lots. The medial side covers are easy to remove for fast and comfortable servicing. These ultra-high precision ball bearings are created to withstand all extremes at track under race conditions as well as just fun racing. A "must have" item!
