Groundbreaking high-speed ball-bearings produced particularly for XRAY. ID x OD x level (mm) = 13x19x4. Few 2 pieces. Top-quality expert ball-bearings for a super-free, super-smooth drivetrain. These affordable ball-bearings are fitted with original artificial covers, plus they are degreased and gently high in unique oil for optimum smoothness, endurance, best threshold and maximum performance.
These ball-bearings have more (and bigger) balls in the cage compared to the regular ball-bearings, making them much more resilient under lots. The medial component covers are now actually a facile task to eliminate for fast and comfortable servicing. These ultra-high accuracy ball bearings are manufactured to withstand all extremes through the entire track under battle conditions or even just fun battle. A "must have actually" item!
