1、High Strength: The bike flywheel is made of high strength steel, which adopts hardening technology and has greater wear resistance and durability. 2、High Durability: High temperature resistance, corrosion resistance, rust prevention, no deformation, high durability, good impact resistance. 3、High Accuracy: This flywheel has high accuracy tooth shape, strong compatibility, which makes riding more possible. 4、Hollow Design: It can easily reduce the weight, reduce the riding load, and achieve a good balance between strength and weight, an ideal choice. 5、Replacement Parts: Easy to install and use, professional manufacturing, direct replacement of old or damaged flywheel, excellent accessories for mountain bikes and road bikes.