New high-speed ball-bearings manufactured specially for XRAY. ID x OD x thickness (mm) = 12 x 18 x 4. group of 2.
Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with unique plastic covers, and generally are degreased and lightly oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, highest threshold and optimum performance. These ball-bearings do have more (and bigger) balls in the cage than the regular ball-bearings, making them far more resilient under loads. The side covers are easy to remove for quick and comfortable servicing. These ultra-high precision ball bearings are created to withstand all extremes on track under race conditions and/or simply fun racing. A "must have" item!
