40hp wr250r/x

they claim 40hp
http://www.epicmotosports.com/productlist.htm?browse=-43384&shopBy=-11751&catalogId=-3195

http://www.supermotojunkie.com/showthread.php?134160-WR250X-Engine-Packages!!!-UP-TO-40hp!!

Wouldn't you if you were selling "engine packages"?

FWIW, you can manipulate any Dynojet to show whatever results you'd like...

Unless that camshaft is magical, the rest of those parts have been dynod together before. They make about 30hp.

Here is their thread on TT with dyno charts.
http://www.thumpertalk.com/topic/985150-developing-a-engine-package-for-the-wr250rx/

oic0 wrote:

Unless that camshaft is magical

Looks to me like they made 36hp with everything but cams. 30hp was without the big bore, crank and porting if I'm reading it right.

In reference to what I said earlier, the dynos I saw were of a 280 and 290, I guess this motor is a 299? That probably wouldn't make much difference BUT the fact that they ported the head may. Who knows, this could pan out. Cam and porting. Though without a spec race class, I can't see any reason to spend that much on this bikes motor. I think I would just sell it and buy a different bike
That said, I would probably buy the cams if they were cheap enough!