Aloha, I just saw the new Fabrizi LC Minarelli listed as 80cc Yamaha (jog). Part number 2127. Has a 50mm 2 ring piston with stock crank, makes 77cc. The ports are Massive!!!! Exhaust port to top of cylinder is 21.9mm, which makes this a fairly high revving cylinder, even though it has 2 rings. Anyone hear or have expereince with this cylinder? frank