400ex piston. wossner or je piston

[tbone247912]

im puting the first top end in my 2001 400ex i was wondering what would be the best piston wossner or je piston. or posibly even wiseco piston also. not sure.

[Here 2 help]

Depends on what kind of racing you are going to do and what level of racer you are.

[tbone247912]

I don't race or amything. I just want a quality piston

[Here 2 help]

The Honda piston is high quality. The Wiseco, J&E, Wossner, ProX, Athena, Vertex, CP, Arias, Namura, Ross Racing and others are all high quality. The deciding factors are: how much you want to spend, availability and specific features of the product. Features such as coatings (for improved friction reduction), ring design (for heat transfer improvement), construction (forged vs cast (forged pistons are more dense for better heat dissapation and slightly higher rpm operation)) and compression ratio. There are other considerations, but these are the most prominent. It's your choice.

[MSPALDING406EX]

Go with a JE Piston, Wiseco piston is a good quality but their rings are crap, i just bored mine out to 406 with a JE piston a couple of years ago and havent had the first problem out of it, plus all the pro riders i know all say run JE!