piston for 03 KTM 250sx

[denriz]

I am thinking of doin the top end of my KTM 250sx,had it almost a year still runs strong, but I dont think I should push it. ANy opinions
which piston to use?? I have used wiseco for YZ and KX rebuilds in the past, but did not know how they were for KTM.

 

[fuzz]

how does the piston look? i did a year on mine with only 2 ring changes.

 

[denriz]

I have not torn into it yet

 

[Midhigh]

I did a top end on my in Feb. I use Wiseco 250exc piston. SX piston is round top w/1 ring & EXC piston is flat top w/2 rings. it mellows out the hit and wears longer. The KTM stock 2002 250exc piston and rings, I hear, are an excellent choice for durability and power if you go with the exc piston.