250-500cc WR300 race head

Just to let you know that i have just buy a race head for my WR300
to make some comparaison between my actual modified oem head vs this new race head (Part #8000H0944 Cylinder head high compression race.) If the result was good, this can be a very simple way to correct the bad squish of the stock head since machined the oem is really hard.

I will go to the dyno again next week.

Yeah i,ve been thinking about getting one when it comes time to put a piston in mine. However now i,ll no if its worth it

how much is it?
will it fit the wr250?

Hi hrc630

How did you go with the race head? What other engine mods have you done?
I have done a bit to my 09 wr300 - PWK carb, pc exhaust 52 tooth rear sprocket. Now i have started i cant stop...

Can't wait to here the results. Do you think you can run pump gas with that head?

I have used OEM high compression on one of our testbikes.

We used 99 octane with booster, = around 102 octane. Or Racegas 102 octane.

If not! It will knocking.

//Klas

HRC any report??

I have one ordered but it hasn't shown up yet