ATC250SX Over Bore Piston Kit

[OldSchoolin86]

I was looking for HP specs and found this over bore kit from Powroll. It's only 2mm over but they claim 20% increase in power. It's only $25!

http://www.powroll.com/P_HONDA_ATC250SX.htm

[Dan Tenn]

I say prove it( I didnt check the link just because I think its B.S.)

[OldSchoolin86]

I agree with you but a 2mm over kit for $25 aint too bad.

[OldSchoolin86]

Well I guess it's possible.
Correct me if I'm wrong but stock specs are:

displacement 246cc
bore x stroke 74x57.3mm
compression ratio 9.0:1

That would mean with the kit the new specs would be:

displacement 260cc
bore x stroke 76x57.3mm
compression ratio 10.5:1

If it was 15 hp stock then it would only take 3 more hp for a 20% increase.

[smokinp]

I agree,and for the money you cant go wrong.

[almac16]

I agree with you but a 2mm over kit for $25 aint too bad.

....and it says regular price is $150?!?!?

Really?

[conig]

hey I was looking at that, its at that price becuase they are going to discontinue it. so its a deal, I didn't even think I would use it but keep it in the shed. oh well guess if I ever do this I will need to go 300cc.

plus I think a cams more worth wild.

[Seabass]

I've emailed them about this before and was told they have none left!
Maybe a year ago...

[ScottZJ]

Yeah I got like 4-5 of them from there when they first anounced it. :p :TrikesOwn