A competition grade fuel cell provides maximum performance and safety for high performance vehicles. RA-series fuel cells are designed and manufactured by Radium Engineering to meet top safety requirements set forth by the worldwide safety organizations FiA and SFI. To learn why a certified fuel cell is superior to a fabricated tank These fuel cells are excellent for all types of motorsports disciplines including road racing, time attack, drifting, rally, off-road racing and many more. The heart of the fuel cell is the bladder (shown below in green). This component undergoes thorough testing and carries the critical certifications. Radium RA-series bladders are made from a special polymer that is resistant to ALL fuel types (gasoline, diesel, AV gas, E15, E85, ethanol, methanol, etc). The bladder is housed in a lightweight powder coated aluminum enclosure that protects from damage and debris. Pre-cut explosion suppressing anti-slosh foam is included as well as an innovative threaded aluminum nut ring which makes fuel pump installation fast and easy. The RA-series fuel cells have been tested and approved by FIA and SFI. All RA-series fuel cells are serialized and come with both certifications and associated paperwork. Certifications are valid for 5 years from the date of manufacture. Radium does NOT offer fuel cells without certifications.