I just bought my first Banshee and wanted to know what kind of gains I'd see with a 4mil crank. As it sits right now it has a .20 over bore, port and polish job, stock head cut/re-chambered, Hot Rodz crank (stock stroke), weseco pistons, V-force 3 reeds, Trinity 2 into 1 35mm Keihin carb (airbox removed), Duncan Mid-range pipes with silencers.
I've been tearing around on it and it is a blast but can definately handle more power. If it is worth it then can I just have the cylinders re-ported for the crank or is the porting a one time deal??