I'm new to the 125. I have c70 1981 passports. I'm looking at getting the super cub 125 . I need to get more speed out of it. 55 mph is not going to get it. I need to have 60-65 Top and cruse 50-55 for a mile or two. I have changed a sprocket and beefed the little c70 up with big bore kit and it got me a little on top end. I just don't know about the fuel injected grom 125 they are putting on the 2019 cub. I know the new monkey hits 70mph but the cub is topping out @55mph. Has to be gears or injectors. I need just a little power Mr.Scott. Any tweaking on the grom motor to get another 5 or 6 mph?