Does anyone do head mods for recreational riders ?
Actually it is for a XLL but I would like a little more punch. Has anyone else tryed it ??
Which shops would you recomend ??

Try this place called "Riva Yamaha".

I hear they do good work!

http://www.rivayamaha.com/RivaStore/pro_shop_serv.shtm

duner, u want to get ur stock head milled. Alot of places do it, Riva being one of them. That will boost ur compression.


And did u get my private message(s)

sorry, thought they just sold aftermarket heads....
It said 92+++ octane does anyone use this with premium ??? (premium is 92 octane) I would like a reliable recreational mod.

I would second Riva as a very reliable source for taking your stock GPR head and re-cutting the domes after decking (milling) the base head surface.

There are some stock heads on Ebay going cheap. Get one of those and have it milled. Then you will have your original head if you ever want to put it back to stock. Riva will take good care of you.

Pro-Tec machined a 1200R head for me. I think the cost was $125.00

Any idea how much they milled off and what was your compression and squish ???

Dont bother trying to have a local machinist mill the head for you to save $20.00. It is not only the amount of material removed but the angle of the squish band. Go cheap now, pay later with a new top end.

Riva has done several for me and they do great work.

Advise well taken ....Thanks !!!