Groundbreaking high-speed ball-bearings produced specifically for XRAY XB808. Sealed with synthetic seal from side enough reason behind metal seal from other part. ID x OD x thickness (mm) = 13x19x4. Group of 2 pieces. Top-quality professional ball-bearings for a super-free, super-smooth drivetrain. These best quality ball-bearings are fitted with unique synthetic covers, and are usually degreased and lightly packed with unique grease for optimum smoothness, longevity, best tolerance and optimum performance.
These ball-bearings do have more (and bigger) balls within the cage compared to the regular ball-bearings, making them a great deal more resilient under loads. Along side it covers are really easy to eliminate for fast and comfortable servicing. These ultra-high precision ball bearings are designed to withstand all extremes on course under racing conditions including simply fun rushing. A "must have" product!
