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I think I am going to have some +3 mm pistons made. Available for purchase with gaskets (head/base), head bolts and exhaust gasket. I am trying to source a couple used cylinders now so I can have them bored/plated to size on the shelf. If I cant, you guys will be responsible for having your cylinder bore/plated to size with the new piston. Plus 3mm makes it a 399cc. Gasket configuration will be 13.0:1 compression for street guys on stock cams and pump fuel. Stock is 12.6:1. It will also require my intermediate sized injector. For guys that have my kit items already thinner gaskets can be supplied for 14.0:1 compression install. Let me know what you think and if you have any interest in one.
Any update on piston kits please