OVERVIEWA 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 Fi A and SFI. fuel cells are excellent for all types of motorsports disciplines including road racing, time attack, drifting, rally, off-road racing, endurance, and many more. CONSTRUCTION The heart of the fuel cell is the bladder. 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. SIZES The manufacturing process for these fuel cell bladders inherently require large tolerances creating a variance in physical size. The volumes listed below are the expected ranges for each bladder. NOTE: These measurements do not account for any objects inside the fuel cell.20-0606Gallons: 5.4 - 6.0Liters: 20.3 - 22.720-0610Gallons: 9.2 - 10.0Liters: 34.8 - 37.920-0611Gallons: 10.3 - 10.5Liters: 38.9 - 39.720-0614Gallons: 13.7 - 14.0Liters: 51.9 - 53.020-0622Gallons: 21.5 - 22.0Liters: 81.5 - 83.3 INCLUDED-Seamless Polymer Bladder-Explosion Suppressing Anti-Slosh Foam-Powder Coated Aluminum Enclosure-Anodized Aluminum Nut Ring-Removable Inspection Plate-FKM 6x 10 24-bolt Gaskets, x 2-Stainless Steel Hardware -Certification of Conformance