47mm cylinder kit for Yamaha Jog, Malaguti F10 and F12, and Aprilia SR 94. (Horizontal Minarelli)
70cc cast iron cylinder kit with an aggressive modified port map for peak performance. The "R" series features an enlarged and reshaped exhaust and transfers. Possibly the nicest cast iron option for your scooter.
Comes with cylinder, head, piston, rings, pin/clips, and gasket set.