I've got a 2013 & I think the CDI is also the newer style, tried 2 different derestricted aftermarkets & they just popped the fuse when I hit the start button. I can hit 50 down hill & not bump the stock limiter. + I put a 72cc BB in it. posted 50-72cc a while back that explains this in more detail. Try the other mods 1st & I don't think you'll have a problem hit the rev limiter. The restrictions I found where in the intake system. The front of the air box, ground out the intake where the rubber tube clamps on. In the air box, drilled more holes in the divider. The tube between the air box & the carb, ground out where it was necked down inside. And the carb was only 16mm, ended up buying a 20mm Kehien for $43. I left the intake manifold alone but it's 18mm. Also some dealers will derestrict them before delivery, Not mine!