Mx bike for harescramble?

Any 450 is a lot of bike for the woods! It’s always best to ride a bike for what it was designed for, Mx bike for Mx ! Xc bike for xc! Enduro for enduro!
So if money is no problem then I’d go with a new bike designd for the type of riding your doing!
Other than that have susp revalved, detune it some, 18” rear wheel, maybe a big tank,
Offcorse everyone has there own opinions!
Just do what feels right to you! & have fun

I'd put in the effort to setup the suspension for off-road before making any other drastic changes, like buying a new bike.

I had a 13 RM-Z450 that I raced harescrambles with. The two best mods were suspension revalve and a Rekluse core auto clutch.

With that said, I have a 2015 YZ250FX now and it is way better for harescrambles and it is completely stock minus suspension. I’m 6’2 205lbs and it is all I need in the woods. Electric start, 6 speed wide ratio, easy clutch pull, 18 inch rear wheel, incredible gas mileage, awesome suspension....

id think the rmz would ironically be the best of the mx bikes for woods solely because its softest bottom and all midrange so should be smooth and predictable tractor power, just add a flywheel weight, maybe a lower seat and -1+2 gearing possibly and the softer of two of the ignition maps

Unless your overweight by a ton, i'd drop down.

I had a uncorked 2015 WR450F for 1 season when i got back into riding. Bike was absolutely terrible for me. Fighting it constantly, never got comfortable on it and it flat wore me out.

Replaced that with a 2017 YZ250F which i kept for most of 1 season. I had a 06 YZ250F back in the day for woods and this was better out of the box in every way. 10x better bike than the 450, left it 100% stock outside of protection. I didn't wear out nearly as quick and was much more rideable in the woods. Enjoyed it but got the itch to finally try a 2 stroke.

Picked up a 2018 Beta Xtrainer 300 and sold the YZ. Power like a 4 stroke, but all the perks of a 2 stroke. Suspension was much softer, and IMO better out of the box than any bike i've owned, which is the exact opposite of most reviews you'll read on this bike. The transition from the 450 to the 250F was almost as drastic going from the 250F to the 300 2-stroke. It's just a much better tool for what i use it for.