Excellent. I have already noticed improvement in engine running and I haven't done anything with it yet. I was able to replace the rear wheel with a freewheel which works great. When I can afford it though, I will be swapping this new hub with the old hub since I had beefer spokes with the original one. So much fun hobby though. Think I had just as much fun building as I do riding it. Think I will sell this one eventually so I can build another one.