Fresh high-speed ball-bearings produced specially for XRAY. ID x OD x level (mm) = 5x10x4. Group of 2 pieces. Top-quality specialist ball-bearings for a super-free, super-smooth drivetrain. These best value ball-bearings are fitted with exclusive plastic covers, and they're degreased and carefully oiled with AeroShell Fluid 12 oil for maximum smoothness, longevity, best threshold and maximum performance.
These ball-bearings do have more (and bigger) balls in cage when compared with regular ball-bearings, making them more resilient under lots. The medial side covers are actually super easy to expel for fast and comfortable servicing. These ultra-high precision ball bearings are made to withstand all extremes within track under competition conditions along with simply fun battle. A "must have" item!
