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