2012 · Cruiser · Buyer's Guide
Blacked-Out Fat Boy Built Different
The Fat Boy Special runs Harley's air-cooled 1690cc Twin Cam, a 45-degree V-twin that lays down 97 lb-ft low at 3,250 rpm and 77 hp through a six-speed box and a clean belt drive. The whole machine is built around presence. Blacked-out engine, wheels, and trim give it a dark, muscular look, and the hidden rear suspension holds that rigid hardtail silhouette without going fully bare. This is a factory custom in the truest sense, a fat, low, deliberately heavy bike that earns a perfect mark for chopper stance and reads as custom straight off the floor.
On the road it plays exactly to type. The 24.3-inch seat drops you low, and while 728 lb is real weight, the low center of gravity settles it once you roll. Build quality holds up to close inspection, which matters on a bike this bold. It suits the rider who wants stance and sound ahead of sport. The honest caveats sit in the details. A safety recall covered front brake master cylinder corrosion, the lifters have a reputation for wearing early and getting noisy up top, and ABS is an option here rather than standard equipment.
Spec sheets don't ride bikes, but they set the baseline.
| Power | 77 hp (57 kW) |
|---|---|
| Torque | 97 lb-ft (132 Nm) @ 3,250 rpm |
| Displacement | 1690 cc |
| Engine | 45° V-twin |
| Cooling | Air-cooled |
| Gearbox | 6-speed |
| Final drive | Belt |
| Front tire | 140/75 R17 |
| Rear tire | 200/55 R17 |
| Seat height | 24.3 in (617 mm) |
| Wet weight | 728 lb (330 kg) |
| Fuel capacity | 5.0 gal (18.9 L) |
Equipment check
Safety
Thumb the starter and the big twin settles into that loping, uneven idle you feel before you fully hear it. At a stop the pulse rolls up through the grips and the floorboards, alive without hammering your hands numb. You sit low and reach out to the controls, boots forward, back relaxed, eyes over that wide fat front end. The 200-section rear tire plants the tail and gives the whole bike a rooted, substantial feel underneath you. Roll onto the highway and it hunkers down low, wind pressure building against your chest as the speedo climbs. The one thing you never quite forget is the mass. At walking pace, easing it around a parking lot or backing off a curb, all 728 lb make themselves known, and you learn to plan where your feet go.
Front brake master cylinder corrosion (safety recall)
The banjo bolt threads on the front brake master cylinder may corrode, causing a brake fluid leak and a loss of front brake performance. A safety recall was issued for 2012 Softail and Dyna models, including the Fat Boy Lo, requiring inspection and master cylinder replacement if necessary.
Premature lifter and cam bearing wear
The 'C' lifters (p/n 18538-99C) introduced in 2011 are considered substandard compared to the earlier 'B' lifters, with reports of excessive wear leading to top‑end noise and potential failure. The INA caged inner cam bearings are also a known weak point, though the larger B‑168 bearings in later Twin Cams are more reliable. Many owners upgrade to aftermarket lifters and captive needle bearings when the cam chest is opened.
Where this Harley-Davidson Softail Fat Boy Special FLSTFB pulls ahead of — or falls behind — its rivals on the numbers, and the typical bike in its class on character.
Power
Torque
Displacement
Wet weight
Seat height
Forget spec-sheet bragging. Here's who the Softail Fat Boy Special FLSTFB is actually built for.
If your riding runs on sound, community, and rolling into Sturgis or Daytona with real presence, this is your bike. The stance and the voice are exactly what you came for.
Made for A1A — Florida Atlantic Coast · Black Hills / Sturgis Rally Hub · Daytona Main Street / Bike Week
For easy days on historic routes and quiet main streets, it looks the part and cruises relaxed. Just know it leans on style and low-end pull, not light, nimble handling.
Made for Acadia National Park · Austin / Handbuilt Motorcycle Show · Blue Ridge Parkway
It can eat highway miles in comfort and looks great doing it, but the 5.0-gal tank and 728 lb loaded two-up make it a stylish cruiser first, not a dedicated long-hauler.
Made for Beartooth Highway · Blue Ridge Parkway · Going-to-the-Sun Road
If you're cross-shopping the older generation, here's what changed.
Previous generation · 2010–2011
Slammed, Blacked-Out, Built Mean
Compare to the previous model →If this one isn't quite the fit, these are the bikes worth riding back-to-back against it.
Any price note compares both bikes at the same age — the youngest age both have on the used market — against this Harley-Davidson Softail Fat Boy Special FLSTFB. “cheaper/pricier” is what that bike costs second-hand, not how worn it is.
