Tried out the new crank and sprockets, much more high end and smoother middle gearing. Just what I needed. I will test the lower end on the way home. Pedals are a big improvement. Built in straps help to get that 360 degree power. A big improvement on a low end bike. I rode back the 3 miles to work after driving home at lunch, didn't even work up a sweat. The stock gearing was too low on the high end.