How To Put A Smaller Sprocket On A BMX Bike

Here is how to put a smaller sprocket on a BMX bike. If you want to put a smaller front sprocket on your BMX bike, you will need to put on a smaller rear sprocket as well, in order to keep the gear ratio the same. Otherwise the gearing will be really low and you won't be able to go fast. On the bike in the video, we have 25 teeth on the front sprocket and 9 teeth on the back, and it works really well. Watch and learn how to put smaller sprockets on your BMX bicycle.