Brand new high-speed ball-bearings produced especially for XRAY. ID x OD x depth (mm) = 10x16x4. Set of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with special rubber covers, and are also degreased and carefully oiled with AeroShell Fluid 12 oil for optimum smoothness, longevity, highest tolerance and optimum performance.
These ball-bearings have more (and bigger) balls inside the cage compared to the regular ball-bearings, making them much more resilient under lots. The medial part covers are easy to remove for fast and comfortable servicing. These ultra-high precision ball bearings are made to withstand all extremes within track under racing conditions and sometimes even simply fun battle. A "must have actually" product!