Has anyone tried a 42 tooth sprocket on the rear, with the stock 14 on the front? If so do you remember how many MPH you lost on top end. Any thought on this combo. I have the sprocket I bought before I actually got my bike. I have been running the stock set up for 200 miles. I had it off road the other day and it lost power on a pretty steep incline I had been wanting to try to climb. The hill is not something I will be doing a lot, it was really more I was testing out the bike, but If the 42 doesn't kill my top to bad it might be better for me. Guess I need to put it on and give it a go. I like this little bike a lot. Man I just wish it had the low range selector like the old bikes. It would be awesome then. Thanks, EE.