2019 Harley-Davidson Softail Slim Specifications

Name: 2019 Harley-Davidson Softail Slim
Brand: Harley-Davidson

Custom / cruiser • Specs last verified 13 July 2026

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2019 Harley-Davidson Softail Slim Overview

The 2019 Harley-Davidson Softail Slim is a custom / cruiser motorcycle built around 1746 cc of displacement. Under the tank sits a Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder engine, a compression ratio of 10.0:1. 2019 Harley-Davidson Softail Slim delivers 145 Nm @ 3250 rpm of torque. From a practical standpoint, the 2019 Softail Slim tips the scales at 304 kg, carries a 18.9-litre fuel tank, offers a seat height of 660 mm and spans a 1630 mm wheelbase. Scroll down for the complete 2019 Harley-Davidson Softail Slim spec sheet covering every technical detail from suspension travel to tyre sizes.

2019 Softail Slim - Pros & Cons

Strengths

Fuel injection: The Electronic Sequential Port Fuel Injection (ESPFI) system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Accessible seat height: At 660 mm, the seat height is approachable for a wide range of rider heights and builds confidence in low-speed manoeuvring.
Large fuel range: The 18.9-litre tank is generously sized, translating to extended range between stops - ideal for touring or longer commutes.
Low-maintenance final drive: Belt final drive means no chain to clean, lube or adjust - meaningfully less routine maintenance than a chain-driven equivalent.

Considerations

Age-related wear: As with any used Softail Slim, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.

Wear Points & Servicing Notes

Heat management in traffic

Softail Slim's air-cooled design means engine-bay temperatures build up more in stop-start traffic than on a liquid-cooled equivalent - a function of the cooling method itself, not a defect. Mesh riding gear and avoiding prolonged idling help in hot climates.

Fuelling & injector care

Fuelling comes from Electronic Sequential Port Fuel Injection (ESPFI). Systems like this are largely maintenance-free beyond keeping fuel quality decent and injectors clear - a fuel-system cleaner every service interval is cheap insurance.

Brake disc and pad wear

The Single 292 mm discs, 4 piston caliper front brake gives strong, progressive stopping power. Disc thickness and pad depth are worth checking at every tyre change, since worn pads can score the disc surface.

Suspension condition on used examples

Up front, the Softail Slim runs Showa Inverted forks and Mono Shock adjustable at the rear. On a used example, check fork seals for weeping oil and test the rear linkage for play - seals are a relatively cheap fix but useful when negotiating price.

Final drive maintenance

Final drive is by belt - lower maintenance than chain with no lubrication needed, but tension and tooth wear should still be checked at service intervals.

Handling the weight at a standstill

At 304 kg, the Softail Slim is a substantial machine - low-speed manoeuvring in car parks takes more physical effort than on a lighter bike, though the weight disappears once rolling.

Softail Slim - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2019 Harley-Davidson Softail Slim, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained Softail Slim should fire up cleanly and settle to a smooth idle within a few seconds.

Oil and filter changes

Regular oil changes are the single most important maintenance task on any Softail Slim. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

Fuel system care

The Softail Slim's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.

2019 Harley-Davidson Softail Slim - Frequently Asked Questions

What engine does the 2019 Harley-Davidson Softail Slim have?

The 2019 Harley-Davidson Softail Slim uses a Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder engine with 1746 cc of displacement. It is air cooled.

How much does the 2019 Harley-Davidson Softail Slim weigh?

The 2019 Harley-Davidson Softail Slim weighs 304 kg. This is the manufacturer's wet figure.

How much power does the 2019 Harley-Davidson Softail Slim make?

The 2019 Harley-Davidson Softail Slim produces 145 Nm @ 3250 rpm of torque.

What is the fuel tank capacity of the 2019 Harley-Davidson Softail Slim?

The 2019 Harley-Davidson Softail Slim has a 18.9-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 315-377 km between stops.

Is the 2019 Harley-Davidson Softail Slim suitable for shorter riders?

The 2019 Harley-Davidson Softail Slim has a seat height of 660 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2019 Harley-Davidson Softail Slim have?

The 2019 Harley-Davidson Softail Slim uses Single 292 mm discs, 4 piston caliper at the front and Single 292 mm disc, 2 piston caliper at the rear.

What tyre sizes does the 2019 Harley-Davidson Softail Slim use?

The 2019 Harley-Davidson Softail Slim runs 130/90B16,53H,BW front and 150/80B1677H,BW rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2019 Harley-Davidson Softail Slim have?

The 2019 Harley-Davidson Softail Slim is fitted with a 6 Speed transmission.

Harley-Davidson Softail Slim Spec Evolution

The Harley-Davidson Softail Slim was produced across 2 model years (2019-2021). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2019	2021
Seat Height	660 mm / 26 in	Laden: 648 mm / 25.5 in Unladen: 660 mm / 26 in
Displacement	1746 cc / 107 cub in	1746 cc / 107 cu-in
Brakes - Front	Single 292 mm discs, 4 piston caliper	Single 300 mm discs, 4 piston fixed caliper
Brakes - Rear	Single 292 mm disc, 2 piston caliper	Single 292 mm disc, 2 piston floating caliper
Suspension - Front	Showa Inverted forks	Dual-bending valve 49 mm telescopic with aluminum fork triple clamps, dual rate spring, "beer can" covers
Suspension - Rear	Mono Shock adjustable	Hidden, free piston, coil-over monoshock, 43mm stroke; cam-style pre-load adjustment
Clutch	Multi-plate, wet	Mechanical, 10 plate wet, assist & conventional
Final Drive	Belt	Belt, 32/66 ratio

Key Specifications

Engine

Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder

Power

Not published by manufacturer

Torque

145 Nm / 107 ft-lb @ 3250 rpm

Top Speed

Not published by manufacturer

Weight

304 kg / 671 lbs

Fuel Capacity

18.9 Litres / 5.0 US gal

Full 2019 Harley-Davidson Softail Slim Specifications

Year 2018 - 19

Make Model Harley Davidson Softail Slim

Seat Height 660 mm / 26 in

Wheelbase 1630 mm / 64.2 in

Ground Clearance 120 mm / 4.7 in

Length 2310 mm / 90.9 in

Dry Weight 291 kg / 642 lbs

Fuel Capacity 18.9 Litres / 5.0 US gal

Oil Capacity 4.7 Litres / 5 US qt

Wet Weight 304 kg / 671 lbs

Max Torque 145 Nm / 107 ft-lb @ 3250 rpm

Displacement 1746 cc / 107 cub in

Engine Detail Four stroke, V-Twin, Milwaukee-Eight 107, Pushrod-operated, overhead valves with hydraulic, self-adjusting lifters, 4 valves per cylinder

Bore x Stroke 100 x 111 mm

Compression Ratio 10.0:1

Cooling System Air cooled

Exhaust 2-into-1-into-2 dual side, catalyst in muffler

Fuel Induction Electronic Sequential Port Fuel Injection (ESPFI)

Ignition Single-fire, non-wasted, map-controlled spark ignition

Lubrication Pressurized, dry-sump with oil cooler

Starter Electric

Clutch Multi-plate, wet

Final Drive Belt

Gear Ratios 1st 9.311 / 2nd 6.454 / 3rd 4.793 / 4th 3.882 / 5th 3.307 / 6th 2.79:1

Primary Drive Chain, 34/46 ratio

Transmission / Drive 6 Speed

Suspension - Front Showa Inverted forks

Suspension - Rear Mono Shock adjustable

Lean Angle 27.4°

Rake 30°

Trail 147 mm / 5.8 in

Brakes - Front Single 292 mm discs, 4 piston caliper

Brakes - Rear Single 292 mm disc, 2 piston caliper

Tyres - Front 130/90B16,53H,BW

Tyres - Rear 150/80B1677H,BW

Wheels Gloss Black, Steel Laced

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.