moto119 said:

Well, let me put it this way.  My friend has an RM250 06 that is ported, polished, Wiseco-Piston, Pro-Circuit system, Hinson Clutch system and Vforce reeds.  It is very fast, but my 12' KTM250sx feels as fast or faster completely stock.

The comment at being a game changer was focused on your reference to feeling like a 450 four-stroke, etc.  If you like your RM250,then you will love the KTM. You just won't hop on it and feel like you've never ridden anything close.

Thanks for that feedback.  Just what I was looking for.  Now I gotta decision to make.

Thanks so much for the reply. My post got so twisted up I was basically trying to ask if it was in the over-rev area... gee it was easy to write just then! haha

I will tell you this... over-rev isn't a bad thing! (agreeing with you).

If you really get up into the over-rev area when you shift the bike doesn't drop down as far so chances are it's up in the meat of the powerband. If you're racing whether woods/motocross when you need that last little bit coming up to a jump face, or into a turn without having to shift because sometimes you just can't because you're too close to the jump/corner etc... so that over-rev can be very nice!

I have to tell you the numbers the new KTM 250SX are putting down ARE the numbers that full mod 250 two strokes put down. What an unbelievable engine!

Mikeee P

tsarbar said:

Were you able to use the stock plastic silencer mounting system, so do you need to use whats provided by PC?

what changes did you make to the Jetting?

I rode one of these today and absolutely loved it, my 09 YZ450 is now up for sale so I can go buy one of these.. Power was great, handling was better than my yz..

autorodtechnologies said:

Another convert, you wont be sorry.  The 2-stroke will rise again!

tdrewk said:

I love my two strokes and fours but do you guys ever get sick of mixing gas all the time as i seem to always be mixing it for my little ktm 85

jokerflingo said:

It gets old for me from time to time but as soon as I kick the bike over and hear the pinger scream I tend to forget all about the fact that I had to mix the gas.

In reality its not much different than gassing up a 4 stroke, pour said amount of oil in can, add gas and go ride. Takes 2 secs and no more work than it does to go fill my can of straight gas for the thumper.

On topic, when it comes time for me to get a new race bike, after all the reading Ive done on the new KTMs, the yz 250 will probably be replaced by one of them there "new pumpkins":worthy: Awesome bikes! Seems like KTM is on the ball.

I'd rather mix my oil any day than change my oil in my yz every two days on the track. Mixing is a breeze. I have sealed maxima mixer, i always keep it filled to the 5 gallon mark. when the can's emptied I dump it in and get 5 gallons of gas.
I have a kx 2-stroke as well, but going to try to hang on to that one for a back up.

Anybody want a yz?

Want more power then get a Eric Gorr 300cc kit for the RM250.

Rm250??

NSF3537, on 09 August 2011 - 10:13 AM, said:

although true, doesnt the pipe and silencer make the motor "breathe" and unvail the true power/fullest power the stock motor has?

iv heared the silencer is the one that limits thepower somehow on KTMs.

hardhitwarrior, on 16 May 2012 - 11:40 AM, said:

Sometimes an aftermarket pipe helps, sometimes not. 2 strokes are typically mid to top end machines as far as where your bike come alive. The pipe may smooth out that power or move it depending on what you are looking for. Dont believe rumors of 7 hp increases. Your best money is spent in porting as far as the engine goes.

Everyone is being pretty clear about this.  The PC pipe certainly DOES NOT give 7HP at the peak. It maintains the peak horsepower longer.  1000rpm PAST the peak there is a 7HP improvement.  Not faster, easier to ride.  No matter how much they like Mitch, MXA isn't just making this stuff up.