Received My Parts from Rossier Last week.
Installation of Everything was a breeze.
Only Time consuming part was dialing in the Pilot jet.
After some time i pulled the plug and there was a perfect brown to charcoal fade.

They went into an 07 450er which is about a month old.

All i can say is wow.
I still need more time to play with tire pressure ext.

Two comparisons

Me against a buddy on a yfz with JE 13:1, HMF, and Jet Kit.

From a third gear roll i instantly pulled him by about 10 lengths if not more through the top of 5th gear.
From a dead stop 1-3 im just spinning ridiculously and then the 4-5 pull just kills him.

Incase you were wondering the weight issue me (TRX) 265lbs him (yfx) 185lbs