If all you have is one cylinder it would probably be more cost effective just to go with an F8 kit, because you would have to individually buy all OEM parts that you don't have. The F8 kits will fit an F6 and in the end you get more HP anyway. Either way, you're gonna need cylinders, pistons, rings, inner and outer gaskets, needle bearings, etc. You get all that with an F8 kit and it's all matched. Speedwerx, Black Magic, D&D, Bikeman all are good. I'm a Black Magic guy, but currently trying Speedwerx (if we get snow).
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