All 2st Vertex or Wossner Piston??

I am re-building the top end of my 09 wr 300. It had a Vertex piston in it stock. Have heard some good things about the Wossner pistons. Curious what others recommend??

i dont know.

I can vouch for the Wossner piston from a durability point of view. They are very nice forgings. The Vertex pistons are fine and I have used a couple for different applications. I don't think they are as tough as the Wossner. JMO

I have used Vertex and Wossner in my old KX250. The Vertex set up was noticeably heavier and the engine really ran better with it. I'll probably stay with Vertex in my Husky.

Shameless plug http://www.cafehusky.com/threads/wr300-oem-piston-kit.36290/

Thanks for taking the time to tell me you don't know. that is helpful.

That is tempting but I already have the cylinder at Hall's and they are going to fit it for a new piston. I was just looking for input on which brand? If I blow the top end again I might hit you up for it.

Wossner for me

and if you blow your top end again your welcome to discus about it in person at my place

Robert-Jan

wossener all the way ive using them for years and never a problem.(touch wood)

Don't forget to order a Wossner wrist pin bearing. The stock husky one is to wide. Dont ask me how I know.

Either of those brands will work nicely and have good life. Keep you bike serviced and you should enjoy a bunch more riding from your choice.

Any suggestions for break-in on a new top end??

Mix the first tank a bit more oil and let it idle a bit before you really start to ride it

check for cooland leaks and/or extreme white smoke (could be a water leak in the head gasket)

when warm run it easy around the block after that load it up a bit more and after an half hour of running time its good to go

Robert-Jan

Thanks for the advice. Much appreciated.

lug the engine dont revv it out and use it for 3 or 4 rides in the booowrraa not bwaaaaaaa sound, this beds the rings into the cylinder walls.
or is what was told to me by me dad have done this to all my bikes and not redone a top end on the same bike in an age!

+1 wossner beautiful machining on them

ohh and let it warm up for a few mins every ride too. gets the exhaust scavenging better so it rides clean from the off.

Thanks for the advice. Can't wait to get her up and runnin again. I opted for the Vertex simply because Hall's had the cylinder and had a vertex in stock and I do not want to wait any longer. Seems feelings are mixed on the piston. Should be fine with either I hope.

wiseco i think.

i checked into Weisco pistons and was told that they do not make one for this bike??

no worries im sure vertex are good i just havent heard of them being from uk, i have used wossner and have good results. good luck with the rebuild

I use vertex in my lads cr125 2011 ran it hard 25hrs ringed it ran it another 25 no probs think it would have gone a lot longer too wayne from uk