We have partnered with a custom cam manufacturer to bring you our own proprietary line of camshafts for the TW200/XT225.  This midrange camshaft has about .080" more lift than the stock cam and makes much more power in the mid to higher RPM range.  This cam has a very smooth increased power delivery throughout the middle of the RPM range without a noticeable loss of low end torque.  Due to increased lift and duration there is a natural loss of cylinder compression, so it is recommended to be used with bigger bore or higher compression pistons, carburetor modifications, advanced timing sprocket, and free-flow exhaust.  This cam likes one tooth of advance when using the stock cam sprocket.