| 1ST LETTER | ENGINE SERIES/TYPE |
| E | OVERHEAD VALVE 61 CUBIC INCHES BIG TWIN (SEPARATE ENGINE AND TRANSMISSION) *KNUCKLEHEAD |
| F | OVERHEAD VALVE BIG TWIN, 74+ CUBIC INCH ENGINES *KNUCKLE, PAN, SHOVEL, EVO, TWIN CAM & M8 |
| G | SERVI-CAR (THREE-WHEELER) 1937-1973 *GE WAS ELECTRIC START 1963-1973 |
| J | F HEAD (IOE, OR INTAKE OVER EXHAUST) 61 AND 74 CUBIC INCH ENGINES |
| K | FLATHEAD, SIDE-VALVE 45/55 CUBIC INCH ENGINES 1952-1956 *PRECURSOR TO XL (SPORTSTER) IN 1957 |
| U | SIDE VALVE BIG TWIN, FLATHEAD, 74 AND 80 CUBIC INCH |
| V | SIDE VALVE 74 CUBIC INCHES 1930-1936 |
| W | SIDE VALVE 45 CUBIC INCHES 1937-1952 |
| X | SPORTS AND SPECIAL CONSTRUCTION *PRECURSOR WAS K-MODEL IN 1952, XL (SPORTSTER) IN 1957 |
| V | REVOLUTION ENGINE, DUAL OVERHEAD CAMS & LIQUID-COOLED *VROD |
| 2ND LETTER | FRONT END SIZE (EXCLUDES SPORTSTER & V-ROD MODELS) |
| L | WIDE FRONT TIRE AND HYDRA-GLIDE STYLE FRONT FORKS |
| X | NARROW TIRE AND SPORT FORKS |
| 3RD LETTER | FRAME STYLE (4TH AND 5TH LETTERS FOR SOFTAIL, ENGINE SIZE FOR XL) |
| D | DYNA |
| ST | SOFTAIL |
| H | HIGHWAY |
| T | TOURING |
| 883 | SPORTSTER |
| 1200 | SPORTSTER |
| 4TH LETTER | SPECIFIC MODEL FEATURES *5TH LETTER FOR SOFTAIL, AFTER ENGINE SIZE FOR SPORTSTER |
| A | MILITARY |
| B | BELT DRIVE FOR INITIAL 1980’S MODELS, BLACK PAINT FOR THE BAD BOY IN 1995-1996 |
| C | VARIOUS MEANINGS INCLUDING CLASSIC, COMPETITION (XLCH), CUSTOM |
| D | DEUCE |
| DG | DISC GLIDE |
| E | ELECTRIC START |
| F | FAT BOY MODEL |
| H | VARIOUS MEANINGS INCLUDING HAND SHIFT, HIGH PERFORMANCE AND HEAVY DUTY |
| I | FUEL INJECTION |
| L | LOW OR LOW RIDER |
| LR | CAN DENOTE LOW RIDER |
| N | NOSTALGIA, IRON (XL883N, SPORTSTER 883 IRON), DELUXE |
| P | POLICE MODEL |
| R | ROAD KING, RUBBER MOUNT (FXR) |
| S | SPRINGER |
| S (NOT “ST”) | SPORTS VERSION |
| SC | SPRINGER CUSTOM |
| T | TOURING |
| V | SEVENTY-TWO (XL1200V, SPORTSTER 1200 SEVENTY-TWO) |
| WG | WIDE GLIDE FRONT END |
| HARLEY DAVIDSON TOURING | |
| MODEL CODE | MODEL NAME |
| FLHR | ROAD KING |
| FLHRCI | ROAD KING CLASSIC |
| FLHRSI | ROAD KING CUSTOM |
| FLHS | ELECTRA GLIDE SPORT |
| FLHT | ELECTRA GLIDE STANDARD |
| FLHTC | ELECTRA GLIDE CLASSIC |
| FLHTCU | ULTRA CLASSIC ELECTRA GLIDE |
| FLHTCUL | ULTRA CLASSIC ELECTRA GLIDE LOW |
| FLHX | STREET GLIDE |
| FLHXSE | CVO STREET GLIDE |
| FLHTCUSE | CVO ULTRA CLASSIC ELECTRA GLIDE |
| FLHTCUTG | TRI-GLIDE |
| FLHTK | ELECTRA GLIDE ULTRA LIMITED |
| FLHTKL | ELECTRA GLIDE ULTRA LIMITED LOW |
| FLHX | STREET GLIDE |
| FLHXS | STREET GLIDE SPECIAL |
| FLHXXX | STREET GLIDE TRIKE |
| FLTC | RUBBER MOUNTED DRESSER CLASSIC |
| FLTCU | RUBBER MOUNTED DRESSER CLASSIC ULTRA |
| FLTR | ROAD GLIDE |
| FLTRSE | CVO SCREAMIN’ EAGLE ROAD GLIDE |
| FLTRX | ROAD GLIDE CUSTOM |
| FLTRXS | ROAD GLIDE SPECIAL |
| HARLEY DAVIDSON SOFTAIL | |
| MODEL CODE | MODEL NAME |
| FLST | SOFTAIL |
| FLSTC | HERITAGE SOFTAIL CLASSIC |
| FLSTF | FAT BOY |
| FLSTN | SOFTAIL DELUXE |
| FLSTSC | SPRINGER SOFTAIL CLASSIC |
| FLSTSE | CVO SOFTAIL CONVERTIBLE |
| FLSTSB | CROSS BONES |
| FXSTB | NIGHT TRAIN |
| FXSTC | SOFTAIL CUSTOM |
| FXSTD | SOFTAIL DEUCE |
| FXSTS | SPRINGER SOFTAIL |
| FXSTSB | BAD BOY |
| FXSTSSE | CVO SOFTAIL SPRINGER SCREAMIN’ EAGLE |
| FXCW | SOFTAIL ROCKER |
| FXCWC | SOFTAIL ROCKER CUSTOM |
| FXS | SOFTAIL BLACKLINE |
| FXSB | SOFTAIL BREAKOUT |
| FXSBSE | SOFTAIL CVO BREAKOUT |
| HARLEY DAVIDSON DYNA/FX | |
| MODEL CODE | MODEL NAME |
| FXDB | DYNA STREET BOB |
| FXDC | DYNA SUPER GLIDE CUSTOM |
| FXD | DYNA SUPERGLIDE |
| FXDL | DYNA LOW RIDER |
| FXDF | DYNA FAT BOB |
| FXDFSE | CVO FAT BOB |
| FXDS-CON | DYNA CONVERTIBLE |
| FXDWG | DYNA WIDE GLIDE |
| FXDX | DYNA SUPER GLIDE SPORT |
| FLD | DYNA SWITCHBACK |
| FXR | SUPERGLIDE II |
| FXRS | LOW GLIDE |
| FXRS | FXR SPORT CONVERTIBLE |
| FXRT | SPORT GLIDE |
| FXRP | POLICE/DEFENDER |
| FXRS | FXR SPORT |
| FXS | LOW RIDER |
| HARLEY DAVIDSON SPORTSTER | |
| MODEL CODE | MODEL NAME |
| XL | SPORTSTER |
| XLH883 | SPORTSTER HUGGER |
| XL883 | SPORTSTER 883 |
| XL883C | SPORTSTER 883 CUSTOM |
| XL883L | SPORTSTER 883 LOW |
| XL883N | SPORTSTER 883 IRON |
| XL1200 | SPORTSTER 1200 |
| XL1200C | SPORTSTER 1200 CUSTOM |
| XL1200L | SPORTSTER 1200 LOW |
| XL1200N | SPORTSTER 1200 NIGHTSTER |
| XL1200R | SPORTSTER 1200 ROADSTER |
| XL1200S | SPORTSTER 1200 SPORT |
| XL1200V | SPORTSTER SEVENTY-TWO |
| XL50 | SPORTSTER 50TH ANNIVERSARY ED. |
| HARLEY DAVIDSON V-ROD | |
| MODEL CODE | MODEL NAME |
| VRSC | V-ROD |
| VRSCAW | V-ROD (240MM REAR TIRE) |
| VRSCB | V-ROD BLACK FINISH |
| VRSCD | NIGHT ROD |
| VRSCDX | NIGHT ROD SPECIAL |
| VRSCF | V-ROD MUSCLE |
| VRSCR | STREET ROD |