This is a replacement set of two Arrma 15x21x4mm Ball Bearings, intended for use with 6S BLX Felony and Infraction kits. These high-quality Rubber Shielded Ball Bearings make an ideal replacement part for your ARRMA vehicle. Features: Premium ball-raced bearings for ultra-smooth operation in all conditions Precision manufactured for fast and easy fit and consistent servicing Manufactured to consistent tolerance for safe and secure assembly High-quality rubber shields for enhanced protection against the elements Keeping dirt, water, and dust out, and lubrication in, means more time bashing and less time wrenching Specifications: Inside diameter: 15mm Outside diameter: 21mm Thickness: 4mm Includes: (2) Ball Bearing 15x21x4mm Compatibility: Arrma Big Rock 6S BLX Arrma Felony 6S BLX Arrma Fireteam 6S BLX Arrma Granite 4x4 Mega Arrma Infraction V2 6S BLX Arrma Mojave 6S BLX Arrma Typhon 4X4 550 Arrma Typhon 6S BLX Arrma Vorteks 3S BLX
