We have partnered with a custom cam manufacturer to bring you our own proprietary line of camshafts for the XR150L.  This midrange camshaft has about .120" more lift than the stock cam and makes much more power in the mid to higher RPM range.  This cam has a very aggressive increase in 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,  and free-flow exhaust.  This is cam is ranked "Best Overall Performer".  Requires the use of stainless high performance valves to be installed.  The stock ones will break.  Ask us how we know.