Complete ECX Boost bearing kit 15 bearings included: 13- 5x10x4 2- 10x15x4 Chrome Steel This is our standard bearing that we have been stocking since the beginning. Chrome Steel is a great budget friendly bearing that will work in most any application. Abec 3 Pre Greased Chrome steel Rubber sealed 440 Stainless Steel Stainless Steel bearings offer 75-85% of the strength as the Chrome Steel bearing, but will not corrode when used in wet applications. Stainless Steel also will run safely at a higher temperature than a chrome steel Abec 3 Pre Greased 440 Stainless Steel balls retainers & races Rubber sealed Ceramic Hybrid Ceramic Hybrids last up to 10xs longer than Chrome Steel bearings. These are used in applications where high speed, load and temperature are a factor. Ceramic balls are harder and rounder than stainless & chrome steel, so therefore they offer less rolling resistance. Abec 3 Light oil Ceramic Silicon Nitride Si3N4 balls Chrome steel races Chrome steel & reinforced nylon retainers Rubber sealed Reinforced nylon retainers Reinforced Nylon retainers can handle up to 60% more speed than a chrome steel retainer. Nylon retainers will lose their elasticity and become brittle in colder temperatures. *main picture is a stock photo
