*Road cassette type 11-speed variable speed bicycle flywheel, compatible with the variable speed systems of major mountain brands.
*Made of high-strength steel, using quenching and tempering hardening technology. Therefore, it has high strength, durability and strong wear resistance. Strong oxidation resistance, not easy to rust, and long service life. Due to the unique design of the bicycle sprocket, the gear shifting function can be well controlled.
*Using hollow design, the weight is reduced. The surface is made of chrome plating. There is no fading phenomenon on the electroplated surface. The silver surface looks exquisite and gives a luxurious feel.