Harley 107-128” kit piston volume.

[838]

I'm assuming the 128" piston and cylinder kit from HD comes with flat top pistons. Does anybody know the piston volume and/or what compression these are at with the stock 107" m8 heads? How far down in the hoke are these typically landing without zero deck?

Thanks

[Nastytls]

Depending on who you ask, the 128 kits are 10.5-.6 with the supplied heads. According to GMR the kit heads have 94cc chambers and the factory have 85cc. GMR has a video on his FB page where he breaks down the kit.