Fairing - The plastic shrouds that deflect wind and rain from the rider, the motorcycling equivalent of automotive bodywork.
Fathead - The Twin-Cam engine (V-Twin, produced from 1999 - Current Day)
Flathead - The Flathead engine (V-Twin, produced from 1929 - 1972)
Fast Riding Award - Speeding ticket
Fat - Too Rich Fuel Mixture
Fender Bunny - Nice babe on the back of a bike
Fender Fluff - Nice lookin' babe on the back
Fiddly-bits - Those chrome do-dads all over saddle bags and seats.
Fishtails or Fishtail Muffler - The exhaust tip or the end of a muffler looks like a Fishtail from the side and usually straight pipe's with Fishtail tips had a narrow exit for the exhaust where no night stick could fit to check for baffles in the exhaust pipe.
Flame and Crook - Fire and Theft insurance.
FlexiFlyer - 1970s 2-stroke Kawasaki 500/750, lots of go, really bad frames.
Flogging it - Gettting on the throttle hard and shifting thru the gears.
Flower Pot - A cheap helmet non snell-approved head protection device.
Fluff - Young Girl (AUSTRALIAN Terminology)
Fluid Exchange - Stopping for gas and to take a leak.
Flycatcher - Kuryakyn Hypercharger
Flying Colors - Riding while wearing the club/organization's colors
Fools Paradise - A Harley-Davidson
Four Banger - An inline four cylinder motorcycle (or automotive) engine, these are among the most powerful motors on a motorcycle. Also referred to as an inline four.
Free Rider - Someone who shares the same ideas as a gang but doesn't belong to one.
French - An old custom car and bike term that refers to mounting a device, a light, usually, deeply recessed into the bodywork, "frenched-in," and peeking out from within a sort of tunnel, completely recessed below the surface of the surrounding bodywork, presenting only a sudden, clean circle through smooth the surface from which the light appears
FreshMeat - New young girlfriend
Frisco Pegs - Railroad spike highway pegs
Frisco'ed/Frisco style - Style when a gas tank is mounted right along the top of the backbone.
Front Door - Leader of a group ride
FTF - F**k The Factory
FTHRWYFL - Forget the Hype, Ride What You F**ken Like!
FTW - F**K The World, also Forever Two Wheels
FUBAR - Which is a very old slang acronym meaning "F_ _ked Up Beyond All Repair." Pertaining to the sad, inoperable and unfixable state of someone's bike or engine or whatever.
Fuel Management System - Carburator