I got a new chain and sprockets. I had counted the teeth on my last rear sprocket at 41, and 15 on the front, so with this in mind I ordered a new 15/41 setup. When I went to change the rear, it was smaller. I counted the teeth, and lo and behold, it was 39! So it turns out I've had the stock gearing this whole time! Needless to say I'm excited as to the change this is going to make, given how much people rave about 14t/41t conversions!