A Cartridge Kit is the complete internals of a front fork. It is possible to exchange the original internals including the top cap. This improves the behavior of the front fork regarding feedback and performance. Also it is possible to make a personal set up of the front fork. For the different kind of bikes we have different kinds of Cartridge Kits in our product range. For more details have a look at the product description or ask one of our Service Centres.