What does f4i on a Honda motorcycle mean?
F4i stands for "Fireblade 400i". It's a model name used by Honda for a 400cc version of its CBR series of sport bikes, which were produced between 1999 and 2007. The "F" in F4i stands for "Fireblade", which is a name used by Honda for its flagship sports bike model, the CBR1000RR. The "4" in F4i stands for the bike's engine displacement, which is 400 cubic centimeters. The "i" in F4i stands for "injection", indicating that the bike uses fuel injection rather than carburetors.