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
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.