2018 Harley-Davidson 115th Anniversary Fat Boy®114


The original fat custom icon that changed it all has done it again. Satin chrome finishes. Beefy 240mm rear tire. And now available in a Milwaukee-Eight® 107 or 114 Big Twin Engine for the most muscular, unstoppable Fat Boy® motorcycle ever.

Styling + Features

  • RIPPED, REFINED, AND READY FOR ITS CLOSE-UP: It’s got solid-disc wheels, a 240 mm rear tire, and jaw-dropping satin chrome finishes.
  • 31 POUNDS LIGHTER. MASSIVE ENGINE POWER: You’ll feel the difference the first time you lift it up off its side stand, throw a leg over and hit the throttle. The ride will thrill you.
  • SATIN CHROME FINISHES: An all-you-can-eat portion of sculpted satin chrome gives the Fat Boy® a look that’ll make a big impact.
  • STEAMROLLER STANCE: A muscular look thanks to all-new solid-disc Lakester wheels wrapped in the widest front tire we’ve ever offered from the factory at 160 mm combined with a 240 mm rear tire.
  • MILWAUKEE-EIGHT® BIG TWIN ENGINE: A powerful, smooth-running engine with crisp throttle response and a pure, soul-satisfying rumble. Available in 107 and 114 engine displacements.
  • SIGNATURE LED FORWARD LIGHTING: Darkness-defying lighting that gives you greater visibility at night.
  • SOFTAIL® FRAME: A lighter, stiffer frame (compared to the prior Softail® and Dyna® models) that takes the idea of form and function to a place it’s never been before. It’s the look of a hard tail from a bygone era that delivers a thoroughly modern ride.
  • HIGH PERFORMANCE FRONT SUSPENSION: Showa® SDBV® suspension technology provides the performance of a racing-style cartridge fork for reduced weight with linear damping characteristics.
  • HIGH PERFORMANCE REAR MONO SHOCK: Easily adjustable mono-shock rear suspension allows for dynamic cornering capability while preserving the hardtail look.

General Information

Manufacturer Harley-Davidson
Model Year 2018
Model 115th Anniversary Fat Boy®114
Color 115th Anniversary Legend Blue Denim



Front - 4-piston fixed

Rear - 2-piston floating

Wheels Front and rear - Machined, Lakester cast aluminum

Front - 160/60R18,70V,BW

Rear - 240/40R18,79V,BW


Length 93.3 in.

As shipped - 671 lb.

In Running Order - 699 lb.

Ground Clearance 4.5 in.
Wheelbase 65.6 in.
Seat Height

Laden - 25.9 in.

Unladen - 26.6 in.


Lighting High beam, turn signals, neutral, low oil pressure, engine diagnostics, ABS, security, low battery voltage, low fuel


Engine Milwaukee-Eight® 114
Displacement 1,868 cc (114 cu. in.)
Bore x Stroke 4.016 x 4.5 in.
Torque 119 ft. / lb. @ 3,000 rpm
Compression Ratio 10.5:1
Fuel System Electronic Sequential Port Fuel Injection (ESPFI)
Fuel Capacity 5 gal.
MPG Rating Estimated City / Hwy - 47 mpg
Exhaust 2-into-2 staggered; catalyst in header
Gear Ratio


1st - 9.311

2nd - 6.454

3rd - 4.793

4th - 3.882

5th - 3.307

6th - 2.79


Oil Capacity 5 qt. (with filter)
Primary Drive Chain, 34 / 46 ratio
Rake 30°
Trail 4.1 in.
Instrumentation Gauges - 5-inch with digital speedometer, gear, odometer,fuel level and analog tachometer indication


Additional Colors

Legend Blue / Vivid Black

Legend Blue Denim