Gorilla Axle Edition Snorkel Kits include complete installation instructions and are designed and tested to be fully operational. OUR SNORKELS DO NOT USE ANY FLEX HOSE AT ALL. THIS GUARANTEES THE BEST AIR FLOW. However, a snorkel kit is only as good as the person who installs it. There is no implied warranty on Gorilla Axle Edition Snorkel Kits or on what may or may not happen to an engine that has a Gorilla Axle Edition Snorkel Kit installed. Gorilla Axle, Inc., it's principals, dealers, and associates are not responsible for any damage caused to machines for any reason. ALL SNORKELS ARE NON-REFUNDABLE!