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Vehicle and Engine Certification

Highway Motorcycles: Family Naming Conventions

To determine Positions 1-4 of your Engine Family name, see:

Use the table below to create Positions 5-12:

Location in Family Name Code/Value Description or Instructions
Position 5 C Industry sector code for all "Highway Motorcycles"
Positions 6-9 for non-electric motorcycles XX.X, X.XX, or
Engine displacement units in liters
(decimal point counts as a digit and each 'X' represents an integer)
XXXX Engine displacement units in cubic centimeters
(each 'X' represents an integer)
Positions 6-9 for electric motorcycles* LION Lithium ion rechargeable battery
NIMH Nickel Metal Hydride rechargeable battery
LICO Lithium Cobalt rechargeable battery
LEAD Lead-Acid rechargeable battery
NICA Nickel Cadmium rechargeable battery
LIPO Lithium Polymer rechargeable battery
LIFE LiFePO4, Lithium iron phosphate rechargeable battery
ZINC Zinc-air full cell rechargeable battery
Positions 10-12 *** Enter any combination of valid characters in order to provide a unique identification for your family name.

*  If you use a battery type that is not listed, please contact EPA at