Here is a great 4 part video series he did on his adventure with replacing the hawk 250 sprockets and a quick ride to see the difference the sprockets have made. Please make sure to subscribe to his YouTube channel for more videos on the hawk 250.
Please make sure to like and share the video if you have watched it to support his channel and help people find these videos on the hawk 250.
I have created a pictured guide on replacing the hawk 250 sprockets. Click on, How to Change Sprockets on Hawk RPS 250 to read that post.