I am 40 years old and have owned my 1995 KX 500 since new. The only real modifications made were revalved and resprung suspension. I had a bit of an accident on it last year that involved some injuries, but I am now ready to start riding again. My 500 has seen desert races, motocross races and has been the best play bike I could ask for. It's a first kick (okay, maybe 2 kicks when cold), never fouled a plug dirt bike that I have loved. Now that I able to start riding again I find that I am really liking the new KX450F and/or the CRF450r. Here is what I am struggling with and my question to those riders that have crossed over to the four stroke world. Is it a good change? Are the four strokes good enough to replace the KX500? I don't have any experience riding the new four strokes so I don't really know what they are like. I know my 500 is faster because I have raced them. I am more concerned with the quality of power and especially the newer designed chassis. Depending on feedback before I either buy a new bike or dump a bunch of money into my 500. Thanks in advance for your help.
Hey man... a little bit ago I had to liquidate a 2001 KTM450MXC (with Cali Plates and e-Start added). After the need for a cash buffer subsided... I wanted to get another bike. I didn't want a dualsport converted bike since in Cali you end up paying for both the street registration AND the off-road registration.
Before that I'd had a DRZ450S (stripped to essentials for dirt riding, re-sprung).
I finally came across a '96 KX500. I'd always contemplated having one... and especially now since the Enviro-Nazi's are trying to clamp-down.
The DRZ450 is a Heavy bike... skip it altogether.
the KTM450MXC was pretty darn cool. But now that I've ridden the K5... I could never go back to it.
Really the only thing the newer bikes are gonna have is a narrower slimmer feel... and they'll be a bit easier to stuff into super-cross style uber-tight turns.
That being said... the seats on the newer bikes suck majorly. They are ALL rock-hard grip mats basically... nothing else, no padding to speak of. I suffered way more monkey-butt on the KTM than this KX. And that's with sporting padded chamois racing underpants too.
There is NOTHING wrong with the suspension on my KX500. In fact, the previous owner happened to have had it re-valved and re-sprung by the same tuner (CLEAN Racing) that worked on my KTM suspension. Both of them are equally awesome in my eyes. And Whoooooo Man!!!! I can blitz across the desert floor and gnarly sand-whoops faster on the K5 than on any other bike I've ever owned. Even faster than on the '97 RM250 I had owned.
In some rare instances I'll get some headshake on the K5... but that's only because with that unholy devil of a sexy engine I find myself blasting through things soo much faster with it than with that KTM.
I'd have to say the the newer 4-strokes are probably a touch easier for the masses at-large to go faster on, since you don't have the same kind of "hit" that the 2-strokes due however... I think that given the same pro-level rider on a well setup K5... he'd smoke'em in an embarassingly bad way.
Mind you... because of the strength of the power of the k5 beast... I believe that same pro-level rider would most likely also finish whatever type of racing it is a bit more tired than his newer 4Stroke competitors.
But so what? right? Who cares how tired ya are after you've just got finished handing them back they're asses at the finish line!