[SLESTAK75]

The head can also be ported and polished. This is moving out of the realm of "basic" mods. Unless you have skills and tools for this job it is recommended that you have it done by someone who does. Tom at Syc Powersports is a perfect candidate for this. He can be reached by PM to SYCARMS or click the banner at the top of the page and go to the contact tab. The stock head has smaller exhaust valve and ports since 2009 so for best performance some money may be in order to get a large valve, large port head, and have it ported and polished. There is even a 4-valve head for these that could also be p&p'd. This is not to say that you won't get nice gains from porting and polishing the stock head. This will again require adjustment to main jet, but by far is the greatest increase in performance of any mod so far. It is surpassed only by going big bore and in some cases could even surpass a big bore with a stock head. The head can also be milled on the chamber surface in order to increase compression. A combination of all these mods will give you all you can get from this motor in its stock form