More Stroke = more leverage = more torque :thumbsup:
Long Rod = increased dwell time :thumbsup:
= decreased piston side load :thumbsup:
The advantage of this is a much broader and smoother powerband :thumbsup:
One thing to prioritze if you are going to do the 4 mil stroker is get the cylinders ported for the added displacement of the stroker and the head will also have to be modified.
Alot of "extra power" is going to depend on the rest of your combination such as pipes, reeds-intakes, carbs, and jetting.
If you are jumping into all this from a stock quad, you will notice a HUGE difference and then if you evetually decide to upgrade cylinders such as RZ, Cheetah, T-Rex, ............ you will already have the stroker crank to compliment those :thumbsup:
If you have the funds GO FOR IT !!! :biggrin:
Hope this helps