Harley-Davidson FLSTF Softail Fat Boy - 2012 Specifications and Reviews
The 2012 Harley-Davidson FLSTF Softail Fat Boy is an iconic cruiser that appeals to riders seeking classic style with modern reliability. Known for its distinctive fat tire design, low-slung stance, and throwback aesthetic, it delivers impressive torque and comfortable two-up seating. This heavyweight cruiser excels on cruising and highway riding with its robust construction and timeless appeal.
General information | |
| Category | Custom / cruiser |
| Year | 2012 |
| Model | Harley-Davidson FLSTF Softail Fat Boy |
Engine and Transmission Specifications | |
| Exhaust system | Chrome, over/under shotgun exhaust with dual mufflers |
| Greenhouse gases | 129.9 CO |
| Fuel consumption | 5.60 litres/100 km (17.9 km/l or 42.00 mpg) |
| Driveline | Primary Drive Chain, 34/46 ratio. Final Drive Belt, 32/66 ratio. |
| Clutch | Multi-plate with diaphragm spring in oil bath |
| Transmission type,final drive | Belt |
| Gearbox | 6-speed |
| Cooling system | Air |
| Lubrication system | Pressurized, dry-sump |
| Fuel system | Injection. Electronic Sequential Port Fuel Injection (ESPFI) |
| Valves per cylinder | 2 |
| Bore x stroke | 98.4 x 111.3 mm (3.9 x 4.4 inches) |
| Compression | 9.6:1 |
| Torque | 133.84 Nm (13.6 kgf-m or 98.7 ft.lbs) @ 3000 |
| Engine details | Air-cooled, Twin Cam 103B |
| Engine type | V2, four-stroke |
| Capacity: | 1687.97 ccm (103.00 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Silver, Bullet Hole Disc Cast Aluminum |
| Rear brakes diameter | 292 mm (11.5 inches) |
| Rear brakes | Single disc. 2-piston caliper. Optional ABS. |
| Front brakes diameter | 292 mm (11.5 inches) |
| Front brakes | Single disc. 4-piston caliper. Optional ABS. |
| Rear tyre dimensions | 200/55-R17 |
| Front tyre dimensions | 140/75-R17 |
| Rear suspension travel | 109 mm (4.3 inches) |
| Rear suspension | Hidden, horizontal-mounted, coil-over |
| Front suspension travel | 130 mm (5.1 inches) |
| Front suspension | 41.3 mm telescopic, beer can covers |
| Trail | 147 mm (5.8 inches) |
| Rake (fork angle) | 31.0° |
| Frame type | Mild steel tubular frame; rectangular section backbone; stamped, cast, and forged junctions; forged fender supports; MIG welded |
| | |
Physical measures and capacities | |
| Oil capacity | 3.30 litres (0.22 quarts) |
| Fuel capacity | 18.93 litres (5.00 gallons) |
| Wheelbase | 1,638 mm (64.5 inches) |
| Ground clearance | 130 mm (5.1 inches) |
| Overall length | 2,395 mm (94.3 inches) |
| Seat height | 635 mm (25.0 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 328.9 kg (725.0 pounds) |
| Dry weight | 314.8 kg (694.0 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Vivid Black, Chrome Yellow, Midnight Pearl/Brilliant Silver Pearl, Tequila Sunrise/H-D Orange |
| Factory warranty | 2 years, unlimited mileage. |
| Seat | Two-piece, two-up Softail seat with removable pillion |
| Electrical | Sealed, maintenance-free, 12V, 19-amp/hour, 270 cca |
| Instruments | Tank-mounted electronic speedometer with odometer, time-of-day clock on odometer, dual tripmeter, RPM/gear display, fuel gauge with low fuel warning light and countdown feature, low oil pressure indicator light, engine diagnostics readout, LED indicator lights, 6-speed indicator light |
| Starter | Electric |
Performance Profile & Rider Fit
Best For
Rider Profile
| Best For | Best suited to riders who already have experience handling heavy, low-slung cruisers at low speed. |
| Purpose | Built for laid-back boulevard cruising and image-driven riding rather than outright performance. |
| Rider Fit | Its low seat height is confidence-inspiring but the substantial dry weight demands decent upper-body strength for slow-speed maneuvers and parking. |
| Character | A muscular, torque-rich cruiser icon that rewards relaxed throttle rolls and a laid-back riding style over aggressive cornering. |
| Not Ideal For | Not the right choice for riders seeking sharp cornering agility, off-road capability, or high-speed sport performance. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
⚠ Safety Recalls (1)
Harley-Davidson Motor Company (Harley-Davidson) is recalling certain model year 2012 FXST103, FLSTC, FLSTC103, FLSTF, FLSTF103, FXDL, FXDWG, FXDWG103, FXDC, FXDB, FLSTN, FLSTN103, FLSTC103Shrine, FLSTFB, FLSTFB103, FXS, FXS103, FLS, FLS103, FLD, FLD103, FXDF, and FXDF103 Dyna and Softail motorcycles manufactured August 22, 2011, through February 24, 2012. In the affected motorcycles, the threads for the brake line banjo bolt in the front brake master cylinder may corrode.
Risk: If the threads corrode, a sudden loss of brake fluid could result, causing a loss of the front brakes, and increasing the risk of a crash.
Remedy: Harley-Davidson will notify owners, and dealers will flush and inspect the front brake master cylinder and, if necessary, replace the master cylinder, free of charge. The recall is expected to begin on January 22, 2015. Owners may contact Harley-Davidson customer service at 1-800-258-2464. Harley-Davidson's number for this recall is 0163 and 0164.
Source: NHTSA. View all Harley-Davidson recalls →
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