The ECS BB (Ball-Bearing) driveshafts provide a substantial performance gain within the standard blade-type driveshafts. The friction between your driveshaft and also the outdrive is greatly reduced, which helps you to give a much smoother managing feel, particularly on quick way modifications, like chicanes. The reduced friction helps to increase cornering rates. The 53mm shafts are best suited for lots more open and moving track layouts. They'll provide somewhat less initial steering, but better steering in the corner, and on energy. Upkeep of the bearing driveshafts is important, but quite simple. Develop them as you would your normal ECS driveshafts, but with these addition; we recommend using the Hudy Joint Grease (106213) involving the little bearings as well as the outdrives, for a prolonged life for the parts.