On the PRC Icon chassis the split rear cassette arrived in 2007, and many makers later used a similar layout for adjustability, simplicity, and versatility that is now common in karting. Harrill Wiggins covers how to adjust these cassettes and fit them in a chassis, which matters for chassis performance. Kart racing is a dangerous activity and should only be performed by trained and licensed professionals. It is the users sole responsibility to determine the overall safety of the products they use. Obtaining higher speeds and performance from your chassis increases the risk of injury. Wiggins Kart Shop, Inc. and/or Phantom Racing Chassis does not assume any liability from manufacturing and/or advising its customers in chassis performance. Please note that Phantom Racing Chassis does not continue research and development on chassis models that are not currently in production. This includes any ongoing development of setup details. Therefore, any setup related advice that is given by the PRC staff on previous models is based on historic data and may be considered to be out-of-date.