Brand new high-speed ball-bearings manufactured specifically for XRAY. ID x OD x thickness (mm) = 8x16x5. Group of 2 pieces. Top-quality expert ball-bearings for a super-free, super-smooth drivetrain. These finest quality ball-bearings are fitted with special rubber covers, and are degreased and lightly filled up with unique grease for optimum smoothness, longevity, greatest tolerance and optimum performance.
These ball-bearings have more (and larger) balls within the cage compared to the regular ball-bearings, making them a great deal more resilient under loads. The side covers are easy to eliminate for fast and comfortable servicing. These ultra-high accuracy ball bearings are designed to withstand all extremes during the track under race conditions as well as just fun race. A "must have" item!