Brand new high-speed ball-bearings manufactured especially for XRAY. ID x OD x depth (mm) = 13x19x4. Pair of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with unique plastic covers, and therefore are degreased and lightly filled up with special oil for maximum smoothness, long life, highest threshold and optimum performance.
These ball-bearings have more (and larger) balls inside the cage versus regular ball-bearings, making them alot more resilient under lots. The medial side covers are easy to remove for fast and comfortable servicing. These ultra-high precision ball bearings are made to withstand all extremes during the track under racing conditions or even simply fun racing. A "must have" product!
