2015 HARLEY-DAVIDSON® SOFTAIL® FAT BOY®
The original fat custom icon with a burly style that's often imitated but never duplicated.
Key Features may include:
Fat Custom Style
Fat Custom Tank Details
Six-Speed Cruise Drive® Transmission
Anti-Lock Brakes
New Front Brake System
Fat Dunlop® Tires
Full-Length Rider Footboards
Narrow Seat
2015 HARLEY-DAVIDSON® FLSTF SOFTAIL® FAT BOY® BASE
Year2015
ManufacturerHarley-Davidson®
Model NameFLSTF Softail® Fat Boy®
Trim NameBase
Generic Type (Primary)Cruiser
DIMENSIONS
Length94.3 in.
Seat Height, Laden25 in.
Seat Height, Unladen27.2 in.
Ground Clearance5.1 in.
Rake (steering head) (deg)31
Trail5.8 in.
Wheelbase64.4 in.
Tires, Front Specification140/75R17 67V
Tires, Rear Specification200/55R17 78V
Fuel Capacity5 gal.
Oil Capacity (w/filter)3.5 qt.
Weight, As Shipped694 lb.
Weight, In Running Order725 lb.
ENGINE
EngineAir-cooled, Twin Cam 103B™
Bore3.87 in.
Stroke4.374 in.
Displacement103.1 cu in
Compression Ratio9.6:1
Fuel SystemElectronic Sequential Port Fuel Injection (ESPFI)
DRIVETRAIN
Primary DriveChain, 34/46 ratio
Gear Ratios (overall) 1st9.311
Gear Ratios (overall) 2nd6.454
Gear Ratios (overall) 3rd4.793
Gear Ratios (overall) 4th3.882
Gear Ratios (overall) 5th3.307
Gear Ratios (overall) 6th2.79
CHASSIS
ExhaustChrome, over/under shotgun exhaust with dual mufflers
Wheel Type, FrontMirror Chrome Aluminum Bullet Hole Disc
Wheels Type, RearMirror Chrome Aluminum Bullet Hole Disc
Brakes, Caliper Type4-piston front and 2-piston rear
PERFORMANCE
Engine Torque Testing MethodJ1349
Engine Torque97.4 ft-lb
Engine Torque (rpm)3,000
Lean Angle, Right (deg.)26.2
Lean Angle, Left (deg.)27
Fuel Economy: Combined City/Hwy42 mpg
ELECTRIC
LightingHigh beam, neutral, low oil pressure, turn signals, engine diagnostics, security system (optional), 6-speed, low fuel warnings
GaugesTank-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
Recalling the "hardtail" choppers of the '60s and '70s, the Fat Boy® motorcycle keeps that heritage alive more than forty years later. This is the original "fat custom" bike—laid-back and luxurious with an unmistakable profile on the road. But the nostalgic style isn't just about the confident stance, chrome and old-school detail. It's how you look riding it. It's how it feels. It's the classic, relaxed riding position. You're not just cruising. You're in charge—kicked back on a throne of machined metal surveying your domain.
This tank makes a statement with its leather tank strap, chrome side badges, and chrome speedometer and ignition switch console. The Fat Boy® model speedometer face boasts a big, bold display for the odometer and an ancillary display for gear and rpm, so all the info you need on the fly is yours at a glance.
You want a ride that rumbles—not begs for mercy—when you lean on it a little. The Six-Speed Cruise Drive® transmission provides smooth, quiet shifting and reduces engine speed on the highway, so you get a better match between engine turnover and road speed. It's a rare ride when a bike responds like this, and a low growl goes a long way when you're opening up the road ahead.
You may be cruising with swagger, but you know safety counts. This sophisticated, factory-installed ABS gives 'stopping power' a double meaning. You'll turn heads with clean, streamlined design. But more importantly, you get certainty in the saddle knowing your bike's going to behave when you need it.
A new front brake system on the Softail® models this year delivers a 40 percent reduction in the amount of lever force required at peak braking. The handlebar master and front cylinders have been restyled. There's a new 4-piston fixed caliper with 32 and 34 mm pistons, premium caliper piston coating to minimize initial displacement and a larger 300 mm rotor. It all adds up to more stopping power with less effort.
Fatter is better. Rubber 140mm wide up front mitigates feedback from the street for a smoother ride. And the beefy 200mm rear tire provides a confident feeling of sure contact with the road and excellent traction under braking. And since they're from Dunlop®, you know you're wrapping your premium rollers in quality rubber.
Your boots were made for riding, in any way you see fit. Our full-length footboards boast a tried and true design that's stood the test of time. Plenty of foot positions for your taste and comfort. Rubber vibration isolation for a comfortable ride. And heel-toe shifting for confident shifting every time. It takes a few rides, but once you've gotten used to the smooth heel-toe rhythm, you'll never give it up. The toes of your boots won't take the same beating, either.
To go along with the low seat height, we've added some ergos to make sure every inch of low pays off in pleasurable riding. We've slimmed up the seat itself. With the seat shape, lowdown frame and rigid powertrain, you can be sure you'll feel a solid, comfortable connection with the bike and road.
