Brand new high-speed ball-bearings manufactured especially for XRAY. ID x OD x thickness (mm) = 8x14x4. Pair of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These highest quality ball-bearings are fitted with unique rubber covers, and are usually degreased and gently full of special grease for optimum smoothness, longevity, highest tolerance and optimum performance.
These ball-bearings do have more (and larger) balls in the cage than the regular ball-bearings, making them even more resilient under loads. The medial side covers are really easy to eliminate for quick and comfortable servicing. These ultra-high accuracy ball bearings are created to withstand all extremes at track under racing conditions and on occasion even simply fun racing. A "must have" item!
