Remake of the Due-Plus cylinder from Top Performances. It's a replica version of the one used at the world record race in Nardo and now is equipped with a modular cylinder head, which is supposed to result in better cooling since the head has more contact area with the cooling liquid. However, there have never been problems with the cooling of one-piece heads so that the enhancement is more of an optical nature. There is no difference in performance. Compatible with: - Aprilia: Area 51_S, Rally 50 LC_S, Sonic 50 LC_S, SR 50 Min.LC_S - Malaguti: F12 LC_S, F15 Firefox_S - Mbk: Mach G 50 LC_S, Nitro 50_S - Yamaha: AEROX 50_S