Update: sprockets from the Aviotek line are no longer in production. They have been replaced by the Junior line. So if you need to replace sprockets of an existing Aviotek cassette please refer to Junior.

The JUNIOR line offers sprockets that can be assembled to cassettes for 8 speed and 9 speed. As Junior sprockets use the same shape and the same hardened steel as the former Aviotek sprockets, shifting performance and durability is the same. The only difference is the weight. Aviotek was noticeable lighter

Marchisio Aviotek

Marchisio Junior

The plenitude of different types of sprockets make the Marchisio systems look confusing at first sight. But don´t worry, there is no need to study this website extensively. You can easily find a cassette that matches your needs.