Guys I have one let on the shelf. My supplier is shut down, not sure when I'll be able to have more. If you want it get it now. Respond on here first before placing the order so I know who get's it fairly. Thanks and stay safe!
Need to investigate does this does set any restrictions on what head gaskets to use, but in overall, a great initiative from @Superpacman13 to ensure 390 could be considered as a reliable racing platform with adequate upgrades.I like the copper fire right that was added in.
@tylercarbone - hey, that is a good reference, I was not even aware there has been such an improved cylinder head been developed by GrayArea (y). That does go to my shop-list for sure if i come up with a decision to continue racing KTM anymore due to the immense unreliability of that engine as the last 2 seasons have proven or to move over to Kawasaki 400 what appear to demand only fuel, tires and oil.