new piston

[400EXdude]

hey, my dad just ordered a new 1mm over piston...i already have a white bros E-series slip on and proper jetting..should i get some noticeable gaines with this piston...also, in the future i plan on gettin a hot cams stage 2...and K-N filter in the near future...

[OldYellow]

The piston alone wont make that big of a difference, but with the cam along with it, u will see a noticeable difference. What compression ratio are u running?

[RiderTRX400ex]

if you had stock piston before, you should notice its revs a little faster... little more torque?