Has anyone used prox pistons? How good are they and will they last? They cost 150� vs 230 OEM yamaha. Big save on money.
If you havent then any friend maybe?

Alot MX guys use them but they also replace them often, so cant compare to them.

I used them in my TDR250 and RD350 (2-stroke). They are as good as the Yamaha ones. I recently fitted one to my girlfriends 1991 xtz660. The company that did the rebore advised me to use the Prox ones. You can find cheaper pistons on the internet (Namura?) but the stories I read about them weren't that good.

Thanks. I guess I will use them. Haven't heard anything bad about them anywhere so they should be good.