L: Refers to "Low." Models with this letter are generally lower to the ground, featuring a lower seat height and a more relaxed riding position.
R: Indicates a racing or performance-oriented model. These models are designed for higher speeds and typically come equipped with enhanced features like more powerful engines, upgraded suspension, and improved brakes.
S: Stands for "Special." Models with the S designation often feature premium features, upgraded components, and distinctive styling elements.
C: Denotes "Classic." These models evoke a vintage or classic design aesthetic, often inspired by Harley-Davidson's heritage and iconic models.
X: Typically signifies a specialty or limited-edition motorcycle. Models with the X designation may feature exclusive features, custom finishes, or limited production runs.
T: Relates to "Touring." Models with this letter are designed for long-distance riding comfort, featuring amenities such as larger fuel tanks, windshields, saddlebags, and comfortable seats.
FX: Historically used for Harley-Davidson's FX series, this designation signified a mid-sized frame with a dual-shock suspension system.
XL: Originally intended for "extra-large," XL models generally have larger engines and a bigger overall displacement.
FL: Used for Harley-Davidson's "Full-size" models, typically referring to the company's big-twin bikes with larger displacement engines.
VR: Signifies "V-Rod," a performance-focused model with a liquid-cooled V-twin engine and modern design elements.
FXD: Refers to the Dyna series of motorcycles, known for their solid and rigid frames.
These letters are used in various combinations and may be accompanied by numbers to denote specific models within a series. For instance, the Harley-Davidson Fat Boy model is abbreviated as "FLSTF," where "FL" stands for "Full-size," "S" for "Special," "T" for "Touring," and "F" for "Fat Boy."
The above list provides a general understanding of the meanings behind the letters used in Harley-Davidson models, but it's not exhaustive, and there may be additional letters and combinations that the company uses for specific models or series.
