it depends on which one you want i have a hotrods kit. its not running right yet, im waiting on a "special" yamaha bolt. i turns out to be pretty expensive, splitting the casses isnt to hard if you have a manual, its 15 bolts on a warrior and 16 i think for a raptor. the most painstaking part is torqueing all the bolts cuz you definaetly wanna torque them down to specs. there desidgned to break (the bolts) so you dont strip the threads in the case. but a stroker gives you alot more torque which is sweet if toy love wheelies or huge hill drags. check out your manual in the engine dissassembly section and check out whats involved : )
