New high-speed ball-bearings produced specifically for XRAY. ID x OD x depth (mm) = 12 x 18 x 4. Set of 2.
Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These finest quality ball-bearings are fitted with special plastic covers, and generally are degreased and gently oiled with AeroShell Fluid 12 oil for optimum smoothness, long life, highest tolerance and optimum performance. These ball-bearings do have more (and bigger) balls inside the cage compared to regular ball-bearings, making them a whole lot more resilient under loads. The side covers are easy to eliminate for quick and comfortable servicing. These ultra-high accuracy ball bearings are made to withstand all extremes at the track under race conditions or just fun race. A "must have" item!
