Side question.. Is it better to increase the CI (fuel moto 107 kit) or put better heads on it like this kit does?

 

Tell us more about your bike and if you don't mind - budget/goals/riding style. This will affect the responses you get.

 

Go for the Stage IV - You won't regret it! Also recommend the 1.75 rockers - adds just a wee more lift.

 

I have used HD kits in the past. In the most part it did well. If you go with a HD kit-stage IV make sure you check the cylinders/piston real good. I had to have em cleaned up to match like it should. Going with the fuelmoto 107 kit is more promising

 

Great point in adding the bigger ratio rockers......wish I had done that (would have been over 600 lift on my 585 cam). Will get that done probably next winter along w/ a bit more.....

 

You can't sit still for a bit? I am trying to catch up!

 

2013 WG, stage one intake, short shots ( may change to 2-1), and a power vision tuner. Wife owns a vrod, she doesn't ride it that well just get but when the time comes I don't want to be completly left in the dust. I know this won't get me all the way there but close. Mainly I just can't leave stuff alone and want to go faster than I do now hahah

 

Ok, with a 103" engine a Big Bore will not get you much but if you decide to do headwork then a BB is easy and more cost effective.

Before anything, check your crank run-out. The tool is about $100 but you could resale it for ~$75 pretty easily. If your crank is good, say .005" or less, then you are good to go, if not then that is a whole different story....

Basically, if your crank is good, pick out a good cam and 2 into 1 and be happy. If you decide on headwork go ahead with the BB, bigger cam, the 2 into 1, and go get a dyno tune(a lot more $$ though).

 

My crank better be good! The damn thing only has 3100 miles on it!

 

LOL CANT STOP TINKERING...always room for some improvement. All in due time though.