Harley Davidson FLSTF/I Fat Boy (2005-06)

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The Harley Davidson FLSTF/I Fat Boy motorcycle was produced from 2005-06. It features a four-stroke, 45-degree V-Twin, Twin Cam 88 (R) engine with pushrod-operated overhead valves and hydraulic self-adjusting lifters. The motorcycle has a capacity of 1449cc/88.4 cu-in and a compression ratio of 8.9:1. It also has carburetion or electronic sequential port fuel injection for induction. The motorcycle has a single-fire, non-wasted, map-controlled spark ignition and an electric start. The maximum power is 67 hp/48.8 kW @ 5200 rpm with a maximum torque of 116.6 Nm/86 lb-ft @ 3500rpm. The transmission is 5-speed with a belt final drive and a wet 9-plate clutch. The bike has a mild steel tubular frame, a mild steel swingarm, and a 41.3mm telescopic front suspension. It has a single 292mm disc 4 piston caliper front and rear brakes. The FLSTF/I Fat Boy has a length of 2395.2mm/94.3in, a wheelbase of 1638mm/64.5in, and a seat height of 645.2mm/25.4in laden or 698.5mm/27.5in unladen. The dry weight of the motorcycle is 310kg/683 lbs, and the wet weight is 324kg/714 lbs. It has a fuel capacity of 18.9 litres/5.0 US gal and an oil capacity of 3.3 litres/3.5 qts.

Technical specifications:

Make Model: Harley Davidson FLSTF/I Fat Boy

Year: 2005 – 06


Engine: Four stroke, 45 degrees V-Twin, Twin Cam 88 (R) vibration isolation-mounted Valves Pushrod-operated overhead valves; w/ hydraulic self-adjusting lifters; two valves per cylinder
Capacity: 1449 cc / 88.4 cu-in
Bore x Stroke: 95.3 x 101.6 mm
Cooling System: Air cooled
Compression Ratio: 8.9:1
Lubrication: Dry sump, internally mounted, crank driven gerotor pressure and dual scavenge pump with spin on 10~Anot pressurized oil filter
Induction: Carburetion 40 mm constant velocity with enrichener and accelerator pump ESPFI 38 mm throttle bore electronic sequential port fuel injection
Ignition: Single-fire, non-wasted, map-controlled spark ignition
Starting: Electric
Max Power: 67 hp / 48.8 kW @ 5200 rpm
Max Torque: 116.6 Nm / 86 lb-ft @ 3500rpm
Clutch: Wet 9-plate
Transmission: 5 Speed
Final Drive: Belt
Primary Drive Ratio: Chain, 36/25

Gear Ratio: 1st 10.110 2nd 6.958 3rd 4.953 4th 3.862 5th 3.150
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 Suspension: 41.3 mm Telescopic forks with beer can covers
Front Wheel Travel: 130 mm / 5.1 in
Rear Suspension: Hidden, horizontal-mounted, coil-over shock
Rear Wheel Travel: 109 mm / 4.3 in
Front Brakes: Single 292mm disc 4 piston caliper
Rear Brakes: Single 292mm disc 4 piston caliper
Front Tyre: D402F MT90B16 72H
Rear Tyre: D401 150/80B16 71H
Rake: 32 degrees
Fork Angle: 32 degrees
Trail: 147 mm / 5.8 in
Dimensions: Length 2395.2 mm / 94.3 in
Wheelbase: 1638 mm / 64.5 in
Seat Height: Laden2 645.2 mm / 25.4 in Unladen 698.5mm / 27.5 in
Ground Clearance: 130 mm /. 5.1 in
Dry Weight: 310 kg / 683 lbs
Wet Weight: 324 kg / 714 lbs
Oil Capacity: 3.3 Litres / 3.5 qts.

Fuel Capacity: 18.9 Litres / 5.0 US gal

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