going to be building a +1mm and a stock valve drag heads. both heads will have brass guides and seats. if interested contact me for a price.

also have one mx head all ready here and a bunch of stock heads. if you are in need of any type of head pm me. also i do take trade for these heads as long as the head is a good non ported head.

Are the valve guides shortened too?

yup if you would like i could take a pic of mine and post it here but the pic will have to go threw the carb as it is installed and running

No need for the pic. I was just wondering, as there are some large lift cams out now for the yfz that need shortened guides.

Thanks.

can i ask you why you would run a ultra high lift cam. the cam is only at high lift for 1 degree. we like to run a mild lift and have found this to be the best for us and our heads and thats why are cams are custom made.

Actually I personally do not run ultra high lift cams, but some people do. Right now I have a set of 187+2.5's in my 522cc and they do great. But I am about to redo the whole motor... different crank, piston (same 100mm bore though), cams, head, intake, etc. etc.

I really only asked so that people reading would know if that was available.

I personally believe yfz 5 valve design works better in the before peak lift and after peak lift areas, and that is where I concentrate my power to be at.

you should come work for us we think alike. also a long duration is easier on the valve train, as you arent slamin them open and shut so fast. webb has made us so really nice custom cams which really work well.

Thanks

Do you sell these cams to customers or are they only for your motor builds?

i will sell them to customers. there 435 plus core

Yfz heads don't flow very well in the "higher lift" areas as alot of other 4 valve heads... but they have a very strong mid lift flow

some people let them huge lift cams and i agree that longer duration is better.

HEADS ARE GONE