The 2018 Harley Davidson Softail Fat Boy is a powerful motorcycle with a four-stroke V-Twin engine and a capacity of 1746 cc/107 cub in. The engine is air cooled with a compression ratio of 10.0:1 and electronic sequential port fuel injection. It has a 6-speed gearbox and final belt drive. The bike has a lean angle of 25.6 degrees to the left and right and a ground clearance of 115 mm. The front suspension has Showa inverted forks, while the rear suspension is mono shock adjustable. The bike is equipped with two disc front brakes and a single disc rear brake. The front and rear wheels are machined Lakester cast aluminum with tyres of 160/60R18 and 240/40R18, respectively. The bike has a rake (steering head) of 30 degrees, a trail of 104 mm/4.1 in, and a dry weight of 304 kg/670 lbs. The wet weight is 317 kg/699 lbs, and it has an oil capacity of 4.7 Litres/5.0 US qt and a fuel capacity of 18.9 Litres/5.0 US gal.
Technical specifications:
Make Model: Harley Davidson Softail Fat Boy
| Year | 2018 |
|---|---|
| Engine | Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder |
| Capacity | 1746 cc / 107 cub in |
| Bore x Stroke | 100 x 111 mm |
| Cooling System | Air cooled |
| Compression Ratio | 10.0:1 |
| Exhaust | 2-into-2 staggered; catalyst in muffler |
| Induction | Electronic Sequential Port Fuel Injection (ESPFI) |
| Lubrication | Pressurized, dry-sump with oil cooler |
| Ignition | Single-fire, non-wasted, map-controlled spark ignition |
| Starting | Electric |
| Max Torque | 148 Nm / 109 ft-lb @ 3000 rpm |
| Clutch | Multi-plate, wet |
| Transmission | 6 Speed |
| Primary Drive | Chain, 34/46 ratio |
| Final Drive | Belt |
| Gear Ratio | 1st 9.311 / 2nd 6.454 / 3rd 4.793 / 4th 3.882 / 5th 3.307 / 6th 2.79 |
| Lean Angle, Left | 25.6 o |
| Lean Angle, Right | 25.6 o |
| Front Suspension | Showa Inverted forks |
| Rear Suspension | Mono shock adjustable |
| Front Brakes | 2x Discs 4 piston caliper |
| Rear Brakes | Single disc 2 piston caliper |
| Front Wheel | Machined, Lakester cast aluminum |
| Rear Wheel | Machined, Lakester cast aluminum |
| Front Tyre | 160/60R18,70V,BW |
| Rear Tyre | 240/40R18,79V,BW |
| Rake (steering head) | 30 degrees |
| Trail | 104 mm / 4.1 in |
| Dimensions | Length 2370 mm / 93.3 in |
| Wheelbase | 1655 mm / 65.6 in |
| Ground Clearance | 115 mm / 4.5 in |
| Seat Height | 675 mm / 26.4 in |
| Dry Weight | 304 kg kg / 670 lbs |
| Wet Weight | 317 kg / 699 lbs |
| Oil Capacity | 4.7 Litres / 5.0 US qt |
| Fuel Capacity | 18.9 Litres / 5.0 US gal |
