FMF Fatties, ported and bored cylinders, trued and welded crank, Pro Design cool head with 21cc domes;water impeller and EZ drain. Toomey radiator and 2:1 intake with foam and outerwear. +2" arms, +4"axle, twist throttle.
The FMF Fatties lost low end but gained explosive top end.
My father in law has a banshee, and his buddy who runs a performance machine shop took it, and modified the reed cage... Put some kind of metal reeds in place of the stock ones, and also trimmed the pieces back that stop the opening of the reeds...talk about a noticable difference!! WOW!! I'm amazed I haven't seen this in anyone elses postings yet!
I'm not sure if that's the technical term for it..I can find out. But it's a device that as you rap up the rpm's, it gradually dumps the compression from the chamber, robbing you of power. It's made to down tune the bike for safety. We made it so that you don't get robbed anymore! HUGE difference!!
I put the Toomie pro racers kit on mine , rower valves,jets, meatering rods, 2 in 1 air filter, pipes and mufflers (chrome) and WOW what a differance, it felt like I doubled the power, didnt loose any bottom end , and gained TONS of top