ARF Presents: Certified vs Non-Certified Bicycle Helmet Impact Test.. Come along with pro riders Mike Clark, Brandon Dosch and Chad Kerley. This video shows without a doubt the tremendous difference in protection between certified and non certified helmets. We tried to simplify the physics as much as possible but the results are undeniable. Make sure if you are riding BMX you are wearing the proper protection. It could mean the difference between riding again or not.