Product details:

SunRace 12 Speed XD Cassette 10-50t Black Cassettes. This superb model features 12 top-quality sprockets for smooth shifting performance in every gear. Its design consists of an A7075 aluminum larger sprocket and alloy spacers, lockring and spider for outstanding strength and durability on the trails. Additionally, its lightweight profile means you can get up to speed in a flash while not worrying about any excess weight holding you back. This is a perfect choice of a replacement for upgrade for your old or worn-out existing model.