Have a 2005 yfz with tons of aftermarket partsI just went through the motor and carb and reshimmed the valves. Starts right up and runs great! Motor has a 06' crank to make it a true 449cc with oil mod on the crank case.Hot rods crankJE 14:1 high compression pistonEsr intakeNmotion exhaust Ported and polished headKibble white valves, springs, and retainersEbc clutchMany more little thingsFrame is gussetted and powdercoatedHouser long travel armsHouser +2 long travel swing armElka long travel suspension all the way around. Shocks were just rebuilt. Lonestar +2 steering stemFlexx handlebars with asv clutch and brake levers Dual stainless front brake lines+4 lonestar axleHi per beadlocks all the was around with dual beadlocks on the rear.Lightspeed true carbon fiber radiator shrouds, nose, tank cover. Much more I am forgetting but just message me if you have any more questions.Call or txt at 785-623-302nine