Maintenance & Technical > KX450F / KX250F
KX450F vs. KX500
Good:
No offence, but if you want less power, get a 250 and stroke it/mod it. That'd be between a 250 and a 500 and might be the answer there. Maybe also get a bigger rear tire. Just like a car, the bigger the tire, the more traction. Just thoughts.
500GUY:
KX or CR 500AF are the real program, half the reason the 4 strokes get better traction is modern geometry the other half is simply smoother power pulse. But put a flywheel weight on a 500 AF and they are awesome trail bikes. Get those new 4 stokes smoken hot in the trails and when ya stall them you be kicking it all day.
kxraptor:
I switch riding between a kx500 and a yz450f.Its true the 4strokes do like to stall in some inconvenient spots , but a flywheel weight seemed to cure that.I seem to use the brakes a hell of a lot more with the KX.The newer suspension is a real plus on the YZ,but I'm gonna put a Racetech setup in the KX and hopefully it matches up well with the Yamaha.
500GUY:
--- Quote ---I seem to use the brakes a hell of a lot more with the KX.
--- End quote ---
That's one major point I forgot to mention, Engine braking on down hill trails are a bonus on the 4 strokes. But I hate the popping and farting.
Texas Champ.:
I race the Houston area, You wouldn't believe the number of racers that have "Had It" with 4 strokes....You'r first comprehensive over haul will cost you 1/2 of what the bikes original cost is and this will happen from 35 to 70 hrs. on the engine . I'm not sure the 4 stroke is going to work well . many families can't afford the higher 4 stk. cost as opposed to what they used to pay to run a 2 stk....If you fall they dont restart well , finicky jetting is very sensitive to temp. and altiutde changes...and the Fuel injected Suzi's are a constant maintenance item..(maybe down the line they'll get better)..The AMA has restructured the classes to benifit the 2 stk this year...The new YZ 250 Has a 4 stk like powerband to help lure riders back...2 Strokes aren't dead yet...with the encomomy in a pinch, look for 2 strokes to sell very well this year...and of course manufactures will notice ..they don't like to build bikes that won't sell.....Kerry
[previous quote]"I seem to use the brakes a hell of a lot more with the KX -500"
Well coasting is a bad habit in MX..The K5 shoud be ran hard to the corner then brake hard,1 click down on the shifter, turn and feed em' a constant roost diet...they dont manufacture a good enough chest protector and enough tear-offs to stay behind a KX-500 very long...So if they are behind you...Give em' a taste.....Could we start you off with an appitizer today???........Kerry
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