How much power from this set up???

[sly400ex]

I'm in the process of building my 250R..

Engine wise it will have the wiseco power lite piston .020 over, esr trx5 pipe and muffler, boysen rad valve with carbon fiber reeds (courtesy of stocktires;) ). How many ponies do you think I will be pushing? What would the final displacement be? Thanks guys!

[sly400ex]

And also, would it be worth it to have it ported and polished? And what kind of gains would I expect from that?

[Predator36]

38 - 42 hp rear wheel HP.

[YZROOSTINYA]

i think porting will just taper the powerband to your style, but will only add a few hp unless you get drastic