KX285,295,300,310 pistons?

What pistons are used in these big bore kits?

Found some info on a KTM300 piston to make a 295 KX but not much more

I run my own machine shop and just recently turned my 93 250 into a 265 and plan on going bigger.

Most of the stuff I build is Drag race automotive stuff but have done more 2 strokes than I can remember.

Thanks in advance on any helpful info.

Wieso pistons makes a verity of sizes. Check out their website

I have the part numbers in the shop for 300 and 310 pistons, I will try to post the tomorrow.

 

Ed

I have the part numbers in the shop for 300 and 310 pistons, I will try to post the tomorrow.

 

Ed

 

 

Which size do you think performs better?

 

Does the additional weight of the piston make the engine rev more sluggishly?

Which size do you think performs better?

 

Does the additional weight of the piston make the engine rev more sluggishly?

 

First the part numbers.

 

These 2 pistons are the same from what I can tell and have used both in my EG ported 310. I don't remember which one but one of these came with my cylinder when Eric did it for me.

 

9050P7395

9548P7395

 

This piston is r 310 piston that I have used in another 310 cylinder I have and works too

 

9336P7395

 

All of these pistons come from MaxPower and are of course Wiseco and for the 74mm bore.

 

The 300 piston is a LASleeve piston and is for a 73mm bore.

 

W5007PS

 

The 295 piston is a 72mm and comes from Eric but I don't know its part number.

 

Chokey I like them all. My favorite for performance is my EG cylinder with one of the top 2 pistons and it is not sluggish in anyway.

My LASleeve 300 is my favorite trail motor though and runs sweet with no hit at all but great torque.

 

None of my bigbores vibrate or do anything odd and  like  bunches.

 

Ed

Thanks no1clyde !!!!!

No time for some sniffing around LOL

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