Brand new high-speed ball-bearings manufactured especially for XRAY. ID x OD x depth (mm) = 5x10x4. Pair of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These finest quality ball-bearings are fitted with unique rubber covers, and tend to be degreased and gently oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, highest tolerance and optimum performance.
These ball-bearings do have more (and larger) balls inside the cage compared to regular ball-bearings, making them more resilient under loads. The side covers are really easy to eliminate for fast and comfortable servicing. These ultra-high precision ball bearings are made to withstand all extremes within track under race conditions and even just fun racing. A "must have" product!
