| MODEL | HARLEY-DAVIDSON SOFTAIL CUSTOM FXSTC 1340 1986 |
| Year | 1986 |
| Engine Type | Four stroke, 45° V-twin, Evolution OHV, 2 valves per cylinder |
| Displacement / Capacity | 1337 cc / 81.5 cu in |
| Bore X Stroke | 88.8 x 108.0 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | Air cooled |
| Max Power | 40.2 kW / 54 hp @ 5000 rpm |
| Max Torque | 92 Nm / 68 lb-ft @ 3500 rpm |
| Ignition | — |
| Induction | 40 mm Keihin CV carburettor |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 38 mm air-assisted telescopic fork, 175 mm / 6.9 in travel |
| Rear Suspension | Twin hidden shocks, preload adjustable, 91 mm / 3.6 in travel |
| Front Brakes | Single 292 mm disc, 1-piston caliper |
| Rear Brakes | Single 292 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 280 kg / 617 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00-21 |
| Rear Tyre | 130/90-16 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The Softail Custom joined the range for 1986, taking the hardtail-look Softail frame of the 1984 FXST and dressing it with a narrow 21-inch spoked front wheel, solid disc rear wheel and belt final drive. The rubber-free, rigidly mounted 1340 Evolution engine gave strong low-down pull and a five-speed gearbox. Period testers liked the engine and shifting but found the single front disc weak and the feet-forward riding position tiring.
