Hello,
The XS Performance Camshaft kit is a very popular design that customers have bought for street use and racing use. The XS Performance Camshaft kit has remained the same design, as it is a drop-in and set type installation for an enhanced replacement for the stock XS650 camshaft and components.
Below are the installation instructions, follow these instructions and you will have yourself a fresh cam.
XS Performance Camshaft Kit Instructions: https://www.mikesxs.net/blog/how-to-install-the-xs650-performance-camshaft-and-valve-spring-kit/
Let us know if we can further assist, would enjoy hearing how it is working for you once installed and running!