i would like any info. on cheap power upgrades for my 2007 450r special edition. i already have boysen quickshot, fmf megabomb full kit(titanium),jet kit,billet air box&lid,unifilter, and gearing changes. any help would be appreciated. in regards to my other post about the stalling prob. none of these parts have helped that prob. it has done this since the day i purchased it. i hope its nothing internal because i cant open the engine due to warranty concerns. according to the dealer as long as i upgrade before or after the engine i wont void the warranty. but other than the stalling prob. this quad is a rocket on wheels