Pistons for 250SX / 250ES ?

[MudBug]

What options do I have for buying a piston for this engine. I searched around a bit and couldnt find anything. I would like a slight bump in compression over stock, but I dont know if they are available. any help guys?

[250Eddie]

ive seen some aftermarket pistons for the sx and es ( same motors ) on ebay for a nice price, about 65 to 70 bucks.

[Woodsrider]

Royal Distributing seems to have Namura pistons...but it seems strange to me that they list the ES, but not the SX or TRX. Here's the link:

http://www.royaldistributing.com/main/index.php?option=com_flippingbook&view=book&id=11&Itemid=195&firstPageNumber=156

It doesn't really say anything specific about compression ratio, and it seems that they only have a piston for the first oversize.

[MudBug]

:lol: it says the bore for the 250ES is 74mm so I dont trust it. IIRC it is something like 66mm? If anyone sees one pop up on ebay let me know because I don't often check. Did Wiseco make a piston for this motor and just discontinue it? or were theynever produced at all. Id really like to go with wiseco over anything else. Thanks guys

[shortline10]

Here you go . I think the first one is the high compression kit .
http://cgi.ebay.com/ebaymotors/ATC250-TRX250-COMPLETE-PISTON-SET-MADE-ROCKY-50-088-_W0QQcmdZViewItemQQhashZitem53e25c2b30QQitemZ36027 9976752QQptZMotorcyclesQ5fPartsQ5fAccessories

http://cgi.ebay.com/ebaymotors/Honda-ATC250SX-ATC250ES-ATC-250-ES-SX-PISTON-RING-50-_W0QQcmdZViewItemQQhashZitem2558f35c12QQitemZ16040 6133778QQptZMotorcyclesQ5fPartsQ5fAccessories

[Woodsrider]

:lol: it says the bore for the 250ES is 74mm so I dont trust it. IIRC it is something like 66mm? If anyone sees one pop up on ebay let me know because I don't often check. Did Wiseco make a piston for this motor and just discontinue it? or were theynever produced at all. Id really like to go with wiseco over anything else. Thanks guys
The stock bore for the ES and SX is 74mm.....the 250R is 66mm .

[MudBug]

Thanks for clearing that up woodsrider! and wow thanks shortline, I want to buy the first one but I dont have an ebay or paypal account so I'm going to find someone who do!