15x21x4mm V2 PREMIUM Bearing with Metal Shields. (MR6702zz). This is our latest version of our very popular Premium Bearing, the V2 is rated at ABEC 7 with closer tolerances and better durability. Plaig Bearings are a stronger, more reliable bearing with greater heat resistance and superior life to the standard factory bearings. We stock all other sizes of bearings for RC Cars and also sell Complete Bearing Kits for many popular brands of vehicles. If you can’t find the correct bearing by size or part number please Contact Us . Click here for Detailed Bearing Specifications