Years ago, I remember being impressed when I installed the 08 engine mount mod on my 06. Two weeks ago, I was intrigued to hear Chad Reed talking in an interview about testing different torque values on bolts holding the cylinder to frame "hanger" plates on his '11 CRF450 to change the turning behavior, and him being very surprised with the results. In the past year I've noticed many pro teams with any bike brands modified these hangers compared to the stock items. Eg. All the current Pro Circuit KX250Fs have substantially cut down hangers. So in search of even more frame flex on my 06, I modified my engine hangers. I took a lot of the width out of them, plus I only torqued the bolts to 20nm each (with some loctite). I'll post a photo when I can. My altered plates will still cope with the counter sprocket torque which pulls the cylinder aft under power, but the real change is that they should allow the main spars to bow outward a bit more, and also allow more twisting thru the head stem. Anyway the results seem really positive on my first test ride. Today I rode for about 3 hrs in total on a tight wet sand track. Traction was pretty good, and I have good settings for that track. Some ruts were deep and well defined and easy once the bike drops into them, and my bike always feels great in those so I'd say no difference. But some tricky corners were a total mess with many lines possible, and inconsistent arc/radius were common. Normally I find my 450 is a real handful on this track, but today I could put the bike anywhere, open lots more throttle and ride for longer. I need to go out and test in more conditions because perhaps today I was just feeling the force or something. I also rode on a wet grass track which has a few moderately deep 3rd gear arc ruts, and I felt like I didn't really need to steer thru those. On small woops I felt more comfortable than usual too. Perhaps what I felt today had a lot to do with those conditions. I know my memory aint great, but considering cornering speed and my trust in the bike, I think I had my best ride ever int he past 4 years. My only setup change were these engine hangers. It might be a winner. Any 06 to 08 KX could do it. The 09 to 11 hangers are already trimmed down, more on the '11 I think. Torque on the bolts has to be a big factor too.