01 Cassette Flywheel - Lightweight Hollow Design Speed Cassette for Road Bikes & Bicycles | Perfect for Racing, Training & High-Speed Cycling

Feature:1. With a hollow design, the weight is reduced, and it will not add too much burden to your bicycle when using it.2. The flywheel rotates steadily without noise, ensuring a close connection with the bicycle hub and smooth operation.3. Using high‑quality metal material, it has good corrosion resistance and heat resistance.4. There is no need to worry about long‑term use of friction and heating, which will affect its service life.5. It has high strength, strong durability and abrasion resistance, compatible with 11‑speed road bike for HG system.Specification:Item Type: Freewheel CassetteMaterial: Aluminum Alloy + SteelProduct Color: MulticolorProduct Weight: Approx. 317g / 11.2ozGear Ratio: 11-36T (11-13-15-17-19-21-23-25-28-32-36T)Compatibility: For 11-speed road bike for HG system Package List:1 x Flywheel2 x Sprocket1 x Flywheel CoverNote:After the installation is complete, check whether the flywheel is locked and whether it is aligned.

With a hollow design, the weight is reduced, and it will not add too much burden to your bicycle when using it.

The flywheel rotates steadily without noise, ensuring a close connection with the bicycle hub and smooth operation.

Using high‑quality metal material, it has good corrosion resistance and heat resistance.

There is no need to worry about long‑term use of friction and heating, which will affect its service life.

It has high strength, strong durability and abrasion resistance, compatible with 11‑speed road bike for HG system.