To put it simply, we all love it. My husband and I have tried several others in our journey to get our son's mini bike back up and running and they never stood up to what we need. But the X-PRO Performance Carb Carburetor Air Filter Assembly 47 49 cc Mini Pocket Bike more than met our needs. It was simple to install and get running, so our 15 year old son was able to be back out having fun right away.