Staffo, the SS kit comes with 130/45s because they dyno tested them with a stock airbox with snorkel removed and a UNI filter. Their test showed about a 6 Hp gain. Unless someone has made other carb changes, this set up about nails the bike with the SS pipes.
But, you have a Freak set up that would require larger mains than their test set up. You'll probably keep your 150s but you will have the option of trying the 45s if you wanted to.
