PWM or PWK?

[AaronRM]

Im lookin at ditching this TMX carb. I have 3 options, 41mm PWK, 39mm PWK, or 38mm PWM. Im lookin for most top end power. I think 41 is to big, the PWM is short then the PWK and they say that equals more top end power. Any suggestions? THANKS!

 

[spank]

41 is too big for 250.In my opinion pwk is the best because you'll have the same top end of pwm but shuold be better the low end:I'm looking for a 39,5 pwk for my cre 500 but in italy I can found only pwms....

 

[bikepilot]

Didn't KX500's come with 39 or 39.5 pwk's?

 

[Matt Fisher]

Aaron, prior to selling mine, I'd planned to use one off a 2000 CR250. That carb is considered an upgrade for 2002 and later years.