2000 KX250 with full Showa suspension

[don46]

hah i just got sucked into his ramblings...

apparently the 98 KX250 is a superbike of some sorts, engine made of pure unobtanium. I'm not doubting the 98 was a decent motor but still...

The 98 250 motor was the best all around 250 motor kawi built (in my opinion, oh yeah and all the magazines to), it had super power all the way through the power band. The newer motors prob ably make more hp, but for me I don't like the delivery, there's nothing then a huge hit.

I have thought about doing the same thing, then adding a flat top piston, it'd be a rocket ship that was easy to ride, instead I had a 06 motor big bored, now I have a torque monster.

[BDI]

I wonder what was going on in 98 because my buddies 98 YZ250 was extraordinarily fast and had alot of power across the board. I have often thought of trying to duplicate the port timing of that bike in a kx500 cylinder.

[bigbellybob]

you all could be on to something my bike is a 98 too and it has its own part# for the jug. and it seems to out run the 96/97 360's and 99-02 380's

[don46]

I think it is no problem building bikes with that kind of power, the difficulty was finding riders that could use the power on the MX track, it was too much for most guys. I've got a complete cylinder/head/ignition off an 88 K5, it looks as though it should be an awesome combo, but then when I tried that in the past it was just OK, so now I'm going to mimic Stewart's head/piston mod to the 88 cylinder, maybe not quite as big an intake window due to the different intake port.