We have partnered with a custom cam manufacturer to bring you our own proprietary line of camshafts for the TW200.  This High RPM camshaft has about .120" more lift than the stock cam and makes much more power in the higher RPM's.  It has a very hard hit in the mid to upper RPM range.  Due to increased lift and duration there is a natural loss of cylinder compression, so it is recommended to be used with a bigger bore or higher compression pistons, larger carburetor, advanced timing sprocket, and free-flow exhaust.  
 
Note:  This cam is big and requires that piston to valve clearance  and valve retainer to valve guide clearance be checked before operation.