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18.104.22.168 Fuel Tanks
1. Fuel caps must be leak proof and have a positive closing device.
2. Fuel tank breather pipes must include a non-return valve. Fuel tank
breather pipes must discharge into a suitable container, one per
motorcycle with a minimum capacity of 200cc and a maximum capacity
3. Fuel tanks of all construction types must be filled with fire retardant
material or be lined with a fuel cell bladder.
In all classes, fuel tanks made of non-metallic composite materials
(carbon fibre, aramid fibre, glass fibre, etc.) must be fitted with a fuel
cell bladder, or have passed the appropriate FIM test standards for
composite material fuel tanks as described in the FIM Fuel Tank Test
Procedure for fuel tank homologation.
Such composite fuel tanks without a fuel cell bladder must bear a label
certifying conformity with FIM Fuel Tank Test Standards. Such labels must
include the fuel tank manufacturer’s name, date of tank manufacture,
and name of testing laboratory.
Each manufacturer is requested to inform the FIM/CCR Secretariat of its
fuel tank model(s) which have passed the FIM test standards, together
with a copy of the fuel tank label.
Full details of the FIM Fuel Tank Test Standards and Procedures are
available from the FIM. (http://www.fim-live.com/en/library/)
Fuel cell bladders must conform to or exceed the specification FIM/FCB-
2005. Full details of this standard are available from the FIM.