Amazing high-speed ball-bearings produced specifically 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 exclusive plastic covers, and are degreased and gently oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, best tolerance and optimum performance.
These ball-bearings do have more (and larger) balls inside the cage set alongside the regular ball-bearings, making them more resilient under lots. The medial side covers are really easy to remove for fast and comfortable servicing. These ultra-high precision ball bearings are manufactured to withstand all extremes at track under competition conditions also simply fun rushing. A "must have" product!
