New high-speed ball-bearings produced particularly for XRAY. ID x OD x depth (mm) = 6x10x3. Pair of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These finest quality ball-bearings are fitted with special plastic covers, and therefore are degreased and gently oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, greatest tolerance and maximum performance.
These ball-bearings have significantly more (and bigger) balls inside the cage compared to the regular ball-bearings, making them much more resilient under loads. Along side it covers are easy to remove for fast and comfortable servicing. These ultra-high accuracy ball bearings are designed to withstand all extremes within track under racing conditions and even just fun racing. A "must have" product!