2006 Harley-Davidson FLSTF/I Fat Boy
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– 2006 Harley-Davidson FLSTF/I Fat Boy
Wrap your eyes around the Fat Boy®, if you think you can. There’s a whole lot to love here. It all starts up front with FL-style fork tubes and huge solo chrome headlight. Generous floorboards are welcoming of any boot size. A robust eighty-eight cubic inches of dual-counterbalanced Twin Cam goodness is available carbureted or in super-smooth EFI.
The engine belts out its baritone song through a set of shotgun pipes. And the broad tires on Silver Aluminum Disc wheels take all this beef to the road in a style like no other. If you’re ready for something bigger than life, get in the saddle of a Fat Boy®. Once you do, the grin on your face will no doubt get bigger, too.
FLSTF/I Fat Boy® Model Overview
One of the most recognizable motorcycles on the road, FLSTF/I Fat Boy offers a muscular profile with fat tires wrapping disc wheels front and rear. A big chrome headlight mounted on wide handlebars, a custom flared front fender and shotgun exhaust announce its arrival. Parked or rolling, the wide handlebar on the Fat Boy completes the large, aggressive and unmistakably Harley-Davidson look. New for the first time in the history of the Fat Boy, Chrome Aluminum Profile Laced wheels are an available option.
FLSTF/I Fat Boy features:
Rigid-mount, 1450cc Twin Cam 88B balanced engine
Black powder-coated engine with chrome covers
Hardtail styling with hidden, horizontal rear shocks
Fat FL forks
Solid disc front and rear wheels
FL rear fender
Seven-inch headlight with chrome fork nacelle
2006 FLSTF/I FAT BOY® SPECIFICATIONS1
Length 94.3 in. (2395.2 mm)
Laden2 25.4 in. (645.2 mm)
Unladen 27.5 in. (698.5mm)
Ground Clearance 5.1 in. (129.5 mm)
Rake (steering head) 32°
Fork Angle 32°
Trail 5.8 in. (147.3 mm)
Wheelbase 64.5 in. (1638.3 mm)
Tires (Dunlop® Harley-Davidson Series):
Front – D402F MT90B16 72H
Rear – D401 150/80B16 71H
Fuel Capacity3 (includes 0.5-gallon reserve) 5.0 gal. (18.9 L)
Reserve Fuel Capacity Carburetor: 0.5 gal. (1.9 L)
(warning light at approx. ESPFI: No reserve due
1.0 gal. for ESPFI models) to fuel injection
Oil Capacity 3.5 qts. (3.3 L)
Dry Weight 683 lbs. (310 kg)
Vehicle Weight in Running Order 714 lbs. (324 kg)
Gross Vehicle Weight Rating 1160 lbs. (527 kg)
Engine4 Air-cooled Twin Cam 88BTM (balanced)
Valves Pushrod-operated, overhead valves w/hydraulic,
self-adjusting lifters; two valves per cylinder
Bore x Stroke 3.75 in. x 4.00 in. (95.18 mm x 101.52 mm)
Displacement 88 cu. in. (1450 cu. cm)
Compression Ratio 8.9:1
Fuel System3 Carburetor or Electronic Sequential
Port Fuel Injection (ESPFI)
Primary Drive Chain, 36/25 ratio
Final Drive Belt, 32/70 ratio
Clutch 9-plate, wet
Frame Mild steel tubular frame; rectangular section
backbone; stamped, cast and forged junctions;
forged fender supports; MIG welded
Swingarm Mild steel, rectangular tube sections,
stamped junctions, MIG welded
Front Fork 41.3 mm telescopic w/”beer can” covers
Wheels5 (Chrome Aluminum Profi le Laced option): Silver, cast aluminum disc
Caliper Type 4-piston front and rear
Rotor Type (diameter x width): Patented, uniform expansion rotors
Front 11.5 in. x .20 in. (292.1 mm x 5.08 mm)
Rear 11.5 in. x .23 in. (292.1 mm x 5.84 mm)
Front Wheel 5.1 in. (129.5 mm)
Rear Wheel 4.3 in. (109.2 mm)
Engine Torque (per SAE J607)6:
North America 85 ft. lbs. @ 3000 rpm (115 NM @ 3000 rpm)
Lean Angle (per SAE J1168):
MPG (EPA urban/highway test)7:
Carbureted 42/50 mpg (5.6/4.7 L/100 km)
ESPFI 44/50 mpg (5.3/4.7 L/100 km)
Battery Sealed, maintenance-free, 12V, 19-amp/hour,
270 cca (per Battery Council International Rating)
Charging Three-phase, 38-amp system
(439W @ 13V, 2000 rpm, 489W max power @ 13V)
Starting 1.2 kW electric w/solenoid shift
starter motor engagement
Lights (as per country regulation):
Headlamp (quartz halogen) 55-watt low beam, 60-watt high beam
Tail/Stop Lights 8W/28W (5W/21W)
Turn Signal Lights 28W (21W) self-canceling
Indicator Lamps High beam, neutral, low oil pressure,
turn signals, engine diagnostics,
security system8 (optional)
Engine Trim Black powder-coated w/chrome treatment
Exhaust System Chrome, over/under shotgun w/shorty duals
Oil Tank Chrome “horseshoe” w/chrome external oil lines
Ignition Tank console-mounted
Handlebars Stainless steel, wide cruiser
Foot Supports Full-length operator fl oorboards
w/heel/toe shift lever
Rear Fender Full coverage
Rear Fender Supports Chrome
Fork Lock Common w/ignition key
Instruments Electronic speedometer w/odometer and
resettable tripmeter, diagnostic readout
Hazard warning Integrated into turn signal controls
Vivid Black, Brilliant Silver Pearl, Black Pearl, Deep Cobalt Pearl,
Glacier White Pearl, Yellow Pearl, Brandy Wine Sunglo,
Two-Tone Chopper Blue Pearl/Brilliant Silver Pearl, Two-Tone
Black Cherry Pearl/Black Pearl, Two-Tone Fire Red Pearl/Vivid Black,
Two-Tone Deep Cobalt Pearl/Brilliant Silver Pearl
Warranty10 24 months (unlimited mileage)
Service Interval First 1,000 miles (1,600 km), every
5,000 miles (8,000 km) thereafter11
1 Harley-Davidson reserves the right to discontinue models or change specifications at any
time without incurring any obligations. Vehicle specifications may vary from country to
country depending on local laws. Some models are not available in certain countries.
2 Measurement reflects 180 lb. (81.7 kg) operator weight.
3 Includes reserve on carburetor-equipped models.
4 Recommended 91 octane or higher fuel (R+M)/2 (87 octane or higher for XL883 models).
5 Standard and optional wheels may vary by country and region.
6 Values shown are nominal. Performance varies by country.
7 Based on tests conducted under ideal lab conditions per U.S. EPA test procedures. Your
mileage will vary depending on your personal riding habits, weather conditions, trip length,
vehicle conditions, and vehicle configuration. Break-in mileage will vary.
8 North American security system includes immobilizer; outside North America the security
system includes immobilizer and siren.
9 Availability may vary from dealer to dealer, and is subject to change without notice.
10 See motorcycle owner’s manual for complete details.
11 Inspections of certain systems and components are required at 2,500 mile (4,000 km) intervals.