Don't know.... From what I have seen and heard over the years and talking to a couple people, most people think mine should be right around a very low 50 horsepower. You see what I got below.... Me personally, I don't know... But I do know it's quick. My first two motos this year against modded 450r's and yfz's I took the wholeshot in the first moto and second out of the whole in the second moto... Not trying to be smart and make someone mad, but that's the honest truth. Got it on video even...
2001 Honda 400ex
motor:+4 stroke crank, 89mm 13:1 JE piston, Stroker cam, port and polish, larger valves, 450r carb, K&N filter, GT thunder shorty, MSD ignition.
Frame: Gibson +3+1 LT front end, Custom axis shocks, RPM swingarm, LSR axle, Graydone proline nerfs, Tag bumper, PEP steering stabilizer, Houser stem, tag bars, Axis rear shock. plus more stuff i cant remember